129 NMS sites 112 within protection zone 36 listed buildings 8 of 9 archaeological periods

Ross is a barony of County Galway, in the historical province of Connacht (Irish: An Ros), covering 306 km² of land. The barony records 129 NMS archaeological sites and 36 NIAH listed buildings, placing it at around the 1st percentile among 280 ROI baronies for sites per km². This means it is in the bottom tenth of all baronies for sites per km². Dated archaeological evidence runs from the Neolithic through to the Modern, spanning 8 of 9 archaeological periods, placing the barony in the 54th percentile among 280 ROI baronies for chronological depth. This means it is in the upper half of all baronies for chronological depth. The largest dated subset of recorded sites dates to the Early Medieval.

Detailed boundary map of ROSS barony, GALWAY
Ross boundary detail
Regional context map showing ROSS barony within GALWAY
Ross in regional context

Heritage at a glance

Percentile rankings throughout this profile compare each barony only against the other 279 Republic of Ireland baronies.

129
Recorded NMS sites
1st percentile
112
Within protection zone
86.8% of recorded sites
36
NIAH listed buildings
17th percentile
306 km²
Barony area

The recorded heritage of Ross

The National Monuments Service Sites and Monuments Record (SMR) is the statutory inventory of archaeological sites for the Republic of Ireland, maintained by the Department of Tourism, Culture, Arts, Gaeltacht, Sport and Media. Sites recorded here include earthworks, ringforts, megalithic tombs, ecclesiastical remains, and post-medieval features; not every record is legally protected, but each is registered as a monument of archaeological interest.

The National Monuments Service records 129 archaeological sites in Ross, putting it at the 1st percentile among 280 ROI baronies for sites per km². This means it is in the bottom tenth of all baronies for sites per km². A sparse recorded total of this kind in Ireland often reflects survey priority rather than genuine absence of past activity. Of these, 112 (87%) fall within a recorded monument protection zone. The record is dominated by ecclesiastical sites — churches, graveyards, and holy wells (43 sites, 33% of the total), with defensive sites forming a substantial secondary presence (24 sites, 19%). Ritual site – holy well is the most prevalent type, making up 9% of the barony's recorded sites (12 records) — well above the ROI average of 3% across all baronies where this type occurs. Ritual site – holy well is a well or spring traditionally associated with a saint, often credited with healing properties; many trace earlier ritual origins but devotion is documented from the medieval period onwards. Other significant types include Children's burial ground (10) and Church (8). Children's burial ground is an unconsecrated medieval and early-modern burial ground for unbaptised or stillborn children, often called a cillín or ceallúnach; Church is a building used for public Christian worship, of any date from c. 500 AD onwards. Across the barony's 306 km², this gives a recorded density of 0.42 sites per km².

Most common monument types

Hover or tap a monument type to see its definition.

TypeCount
Ritual site – holy well a well or spring traditionally associated with a saint, often credited with healing properties; many trace earlier ritual origins but devotion is documented from the medieval period onwards 12
Children's burial ground an unconsecrated medieval and early-modern burial ground for unbaptised or stillborn children, often called a cillín or ceallúnach 10
Church a building used for public Christian worship, of any date from c. 500 AD onwards 8
Graveyard a burial area associated with a church, in use from the medieval period onwards 7
Ringfort – rath an earthen ringfort enclosed by a bank and external ditch — the most common Early Medieval farmstead, broadly dated 500–1000 AD 7
Enclosure a banked or ditched feature of uncertain type, used as a catch-all where the original function cannot be determined from surface evidence 6
Fulacht fia a horseshoe-shaped Bronze Age burnt mound built around a sunken trough beside a water source, traditionally interpreted as a cooking site 5
Ringfort – cashel the stone-walled equivalent of the rath, found mainly in upland or western areas, broadly dated 500–1000 AD 4

Chronological distribution

The dated archaeological record for Ross spans from the Neolithic through to the Modern, with activity attested across 8 of 9 archaeological periods. Every period from earliest to latest is represented in the record — an unbroken sequence of dated activity across the full chronological span. Activity concentrates most heavily in the Early Medieval (36 sites, 48% of dated material), with the Iron Age forming a secondary peak (17 sites, 23%). A further 54 recorded sites (42% of the overall NMS register for the barony) carry no period attribution — appearing as 'Unknown' in the bar chart below. This typically reflects either records that pre-date the standardised period vocabulary or sites awaiting specialist dating review, rather than a genuine absence of chronological evidence.

Mesolithic
0
Neolithic
2
Early Bronze Age
8
Middle Late Bronze Age
5
Iron Age
17
Early Medieval
36
Medieval
4
Post Medieval
1
Modern
2
Unknown
54

Sample of recorded monuments

Show 25 sample monuments (of 129 total)

A representative sample of 25 recorded monuments drawn from the barony’s 129 total NMS entries. Sites within a recorded monument protection zone and rarer site types are prioritised so the list shows a meaningful cross-section rather than only the most common type. Each entry shows the official Sites and Monuments Record reference number and the description published by the National Monuments Service.

Standing stone – pair

SMR GA025-010—-Na Cnocáin BhánaProtected

On N side of Gleann Glaise overlooking the Bealnabrack River. Aligned N-S and 1.7m apart. Both stones are of white quartz. The N stone is squat and wedge-shaped in plan (H 0.5m); S stone is taller and rectangular in…

Stone row

SMR GA025-012—-Cartrún An PhónaProtected

In a low-lying boggy area on the valley floor of Gleann Glaise a short distance to N of the Bealnabrack River. Comprises four white quartz stones, aligned N-S, and measuring 7m overall. The first and third stone, from N…

Crannog

SMR GA026-001—-Baile Dhúlochaearly_medievalProtected

In Ballydoo Lough. Still Island, a small overgrown circular island in N half of the lake, is held by local tradition to have once been inhabited. Drainage work in recent years has lowered the water level, exposing a…

Water mill – unclassified

SMR GA026-013—-Teeranea (Ross By.)Protected

The Archaeological Survey of Ireland (ASI) is in the process of providing information on all monuments on The Historic Environment Viewer (HEV). Currently the information for this record has not been uploaded. To…

Castle – unclassified

SMR GA027-014—-Ceapach Na GcapallmedievalProtected

Close to a small inlet on S shore of Lough Mask. Historical sources attest the presence of a castle here in early 14th C (Topgr. Files, NMI) but the present remains may not be that old. All that survives is NE corner of…

Forge

SMR GA027-029—-Creig An RíProtected

The Archaeological Survey of Ireland (ASI) is in the process of providing information on all monuments on The Historic Environment Viewer (HEV). Currently the information for this record has not been uploaded. To…

Moated site

SMR GA027-033002-Fahy (Ross By.),Páirc An MhuilinnmedievalProtected

On flat land c. 1.3km SSE of Ballindeonagh Castle (GA027-014—-). A subrectangular platform (L 35m, Wth 31m), in fair condition, enclosed by two banks with an intervening fosse. No trace of an entrance survives but the…

Megalithic tomb – court tomb

SMR GA027-039—-Tobar BioróigeProtected

In limestone cragland just beyond S rim of a little valley, in an area now covered by a large plantation of conifers. The monument, fairly well preserved but concealed by cairn material, is aligned E-W. At E is part of…

Cairn – wayside cairn

SMR GA027-042—-Tom NaíonánProtected

On SW-facing slope immediately N of the line of an old roadway. Poorly preserved, rectangular cairn (E-W 1.6m, H 0.9m) which appears to have had a stepped profile.

The above description is derived from the published…

Castle – hall-house

SMR GA039-020—-Lough CorribProtected

On a small island in extreme NW arm of Lough Corrib close to SE end of Gleann an Mháma. This 13th-C keep, now a Nat. Mon., was apparently built c. 1235 by Feidhlim, king of Connacht, as a replacement for an earlier…

Megalithic tomb – unclassified

SMR GA011-009—-LeenaunneolithicProtected

Near the head of a valley 1.5km to S of, and overlooking the inner reaches of, Killary Harbour. The tomb consists of a gallery (L c. 2.4m, Wth 1.25m at the broader, open E end) aligned NE-SW. The W end is closed by a…

Barrow – unclassified

SMR GA026-016—-An Chloch Bhreac UachtairProtected

The Archaeological Survey of Ireland (ASI) is in the process of providing information on all monuments on The Historic Environment Viewer (HEV). Currently the information for this record has not been uploaded. To…

Inscribed slab

SMR GA027-034004-An Choill Bheag ÍochtairProtected

Originally located in the graveyard (GA027-034001-) surrounding 'Rosshill Abbey' (GA027-034—-) and within an ecclesiastical enclosure (GA027-034002-) associated with St Brendan of Clonfert (Gwynn and Hadcock 1970,…

Tomb – unclassified

SMR GA040-013011-InchagoillProtected

The Archaeological Survey of Ireland (ASI) is in the process of providing information on all monuments on The Historic Environment Viewer (HEV). Currently the information for this record has not been uploaded. To…

Road – road/trackway

SMR GA040-013012-InchagoillProtected

The Archaeological Survey of Ireland (ASI) is in the process of providing information on all monuments on The Historic Environment Viewer (HEV). Currently the information for this record has not been uploaded. To…

Barrow – ring-barrow

SMR GA026-020—-Baile Dhúlochabronze_ageProtected

This ring-barrow was discoverd by Mr. Colm Mac Diarmada (pers. comm. December 2014). It is in an upland area of rough grazing and cut-away bogland on a plateau on the SW hillslope of Binn Shléibhe/Ben Levy. Panoramic…

Cairn – unclassified

SMR GA026-022—-An Baile Ard,Ballyweeaunbronze_ageProtected

In an area of bogland and outcropping rock on the summit of Ben Levy, overlooking a small lake to the NW. This subcircular cairn (diam. c. 10m; H c. 4m), constructed of loose stone, is fairly well preserved. Six large…

Cross

SMR GA040-013016-InchagoillProtected

Within the graveyard (GA040-012003-) associated with ‘St. Patrick’s Church’ (GA040-013001-). This cross was found by Higgin (1987, vol. II, 388, no. 108) who describes it as a plain cruciform-shaped slab of limestone (H…

Inscribed slab (present location)

SMR GA027-027001-An FhaircheProtected

This inscribed slab was formerly located in the graveyard (GA027-034001-) associated with 'Rosshill Abbey' (GA027-034—-), c. 1km to the NNW, and within an ecclesiastical enclosure (GA027-034002-) associated with St…

Ford

SMR MA120-053002-Cong NorthProtected

The Archaeological Survey of Ireland (ASI) is in the process of providing information on all monuments on The Historic Environment Viewer (HEV). Currently the information for this record has not been uploaded. To…

House – indeterminate date

SMR GA012-005—-Muintir Eoghain LáirProtected

On a glacial knoll just W of a tributary of Joyce River. A subcircular hut (E-W 5.2m, N-S 5m) defined by a bank of earth and stone with traces of an inner stone facing at NE. A gap at S could be original.

The above…

House – indeterminate date

SMR GA025-006001-Na GrigíneachaProtected

Some 30m N of a ringfort (GA025-006—-) A small rectangular drystone hut (3m by 2.65m int.). Possible entrance at NW corner (Topgr. Files, UCG). Not visited.

The above description is derived from the published…

Burial

SMR GA026-011—-DroinnProtected

On Dead Island, close to N shore of Lough Mask and the Galway-Mayo border. Named, but not clearly marked, on 2nd ed. of OS 6-inch map (1899) on S side of the low hillock which forms the bulk of the island. Regarded by…

Burial

SMR GA026-012—-Earls IslandProtected

At E end of Earl's Island, at extreme SW end of Lough Mask. Described in 1943 as 'A small grassy mound under a thorn tree' (Topgr. Files, NMI). Reputed to be the burial place of Edmund de Burgo, son of the Red Earl of…

Ritual site – holy well

SMR GA012-002—-Glennagevlaghearly_christianProtected

At HWM on S shore close to the head of Killary Harbour and c. 20m from road. It consisted of a hollow (not a spring), now filled in, which was situated in SW corner of a small, low, subrectangular drystone enclosure (L…

Listed buildings

The National Inventory of Architectural Heritage (NIAH) is a state survey appraising buildings of architectural, historical, archaeological, artistic, cultural, scientific, social, or technical interest. Each surveyed structure receives a rating from International (the highest, for buildings of European importance) through National, Regional, Local, and Record-Only.

The NIAH records only 36 listed buildings in Ross, the 16th percentile across ROI baronies — a relatively thin architectural record. The highest-graded structures include 3 of National significance. The Republic holds 937 National-graded buildings in total, so this barony accounts for around 0% of the national total. Construction dates concentrate most heavily in the Victorian (1830-1900) period.

Terrain and environment

Mean elevation across the barony is 130m — the 78th percentile among 280 ROI baronies for elevation. This means it is in the top third of all baronies for elevation. This is a relatively elevated landscape by ROI standards. Elevation matters for heritage because higher-altitude baronies typically favour defensive monuments — ringforts and hilltop forts placed on prominent ground — while lowland baronies are more likely to carry the dense settlement and church networks of intensive agricultural landscapes. The barony reaches 697m at its highest point — a vertical span of more than 567m within its boundary, indicating significant topographic diversity. Mean slope is 10.8° — the 98th percentile among 280 ROI baronies for slope. This means it is in the top tenth of all baronies for slope. This is consistently steep terrain by ROI standards, the kind of landscape that tends to preserve upstanding archaeological features well. Slope is a key control on both land use and archaeological preservation: steep ground resists ploughing and tends to preserve earthworks intact, while gentle slopes favour intensive cultivation that damages or destroys surface archaeology over time. Localised maximum slopes reach 33°, typical of stream-cut valleys, escarpments, or coastal bluffs within the wider landscape. The Topographic Wetness Index averages 9.4, the 7th percentile among 280 ROI baronies for wetness. This means it is in the bottom tenth of all baronies for wetness. This is well-drained ground by ROI standards — typical of upland or steeply-sloping country that sheds water rapidly. Drainage matters for heritage because poorly-drained ground preserves organic archaeology (wooden trackways, leather, textiles, and on rare occasions human remains) far better than free-draining soil; well-drained ground favours arable use but destroys organic material rapidly. The land-cover mosaic combines improved grassland (70%), open water (22%), and woodland (8%), giving a mixed agricultural and semi-natural landscape. In overall character, this is an upland landscape of steep, elevated terrain, with land use dominated by improved grassland.

Terrain measurements

Mean elevation129.5 m
Max elevation697.4 m
Mean slope10.8°
Wetness index (TWI)9.41 7th pct
Grassland69.8%
Woodland7.7% 5th pct

Where this barony sits in the Republic of Ireland

Drainage
7th
Woodland
5th

Geology and preservation

Bedrock geology shapes the landscape long before any settlement begins — controlling soil drainage, agricultural potential, the survival of upstanding monuments, and the preservation of buried archaeology. The figures below come from the Geological Survey Ireland 1:100,000 bedrock map.

The bedrock underlying Ross is predominantly schists (15% of the barony by area), with much of the rock dating to the Proterozoic period. Schist forms upland, often steep terrain with thin soils that limited agriculture but favoured the construction of stone-built monuments and field walls. Schist landscapes commonly carry megalithic monuments and prehistoric ritual sites. With 17 distinct rock types mapped, the barony sits in the top third of ROI baronies for geological diversity (98th percentile) — typically a sign of complex tectonic history or coastal mosaics of differing rock units.

Dominant geological periodProterozoic (31%)
Dominant rock typeSchists (15%)
Mapped formations38
Distinct rock types17 98th pct for diversity

Rock type composition

Schists
15%
Sandstones, Siltstones, Mudstones
12%
Sandstone, Conglomerate, Ignimbrite
12%
Schists, Grits
11%
Dolomitic Limestone, Shale
6%

Largest mapped unit: Ballynakill Schist Formation (15% of the barony)

Placename evidence

Logainm records 8 heritage-diagnostic placenames for Ross, a modest sample drawn predominantly from the townland record. The dominant stratum is early christian ecclesiastical. The most frequent diagnostic roots are cill- (5) and ráth- (1). With a sample of this size the count should be treated as indicative rather than definitive.

Pre-Christian / Early Medieval Defensive

RootCountMeaning
ráth-1earthen ringfort
caiseal-1stone ringfort

Early Christian Ecclesiastical

RootCountMeaning
cill-5church (early)
tobar-1holy well

About this profile

Click any section below to expand.

What is a barony?

A barony is a historic administrative unit in Ireland, broadly equivalent to an English hundred. The 280 baronies used here are from the OSi 2019 National Statutory Boundaries (generalised 20m), covering the 26 counties of the Republic of Ireland. Baronies derive from the Norman period, were formalised in the 17th century, and have not been redrawn for statistical purposes. They vary enormously in area, from compact urban baronies in Dublin to vast upland baronies in Connacht, and should not be compared by raw site count without accounting for area differences.

What counts as a site?

This profile combines three distinct heritage registers, each with its own definition of what constitutes a recordable site:

  • Archaeological sites (NMS). The National Monuments Service Sites and Monuments Record (SMR) catalogues every known archaeological monument or site of archaeological interest in the Republic, from prehistoric burial mounds and ringforts to medieval churches and post-medieval defensive works. Inclusion does not require legal protection — only that the site has been identified, surveyed, and assessed as having archaeological value. A separate subset of these sites lies within a recorded protection zone, which gives them statutory protection under the National Monuments Acts.
  • Listed buildings (NIAH). The National Inventory of Architectural Heritage records buildings of architectural, historical, archaeological, artistic, cultural, scientific, social, or technical interest. Each surveyed structure is appraised on a five-tier scale: International, National, Regional, Local, and Record-Only. The NIAH appraisal is informational rather than strictly statutory, but it underpins local-authority Record of Protected Structures (RPS) listings.
  • Heritage placenames (Logainm). Logainm is the authoritative database of Irish placenames maintained by the Placenames Branch. This profile applies a heritage-diagnostic classifier to the Irish-language form of each townland name, flagging roots that signal defensive sites (ráth-, lios-, dún-, caiseal-, cathair-), ecclesiastical foundations (cill-, teampall-, domhnach-, mainistir-), prehistoric burial-ritual features (tuaim-, carn-, leaba-), or Norse-contact settlement (gall-). Townlands without one of these diagnostic roots are not flagged here — they may still carry historical significance, but that significance is not encoded in the name itself.
Editorial principles

The narrative sections of this profile follow several explicit principles:

  • Evidential. Every claim about this barony’s heritage character is anchored in the underlying register data. Where a site count, a placename count, or a percentile rank is cited, it is computed from the source datasets at export time, not estimated.
  • Comparative. Counts and metrics are reported alongside their percentile rank against the other 279 ROI baronies. A barony with 50 ringforts in absolute terms could be unusually high or unusually low depending on its size and regional context; percentile ranking removes that ambiguity.
  • Transparent on limits. Where a register has known coverage gaps, survey biases, or data-quality issues that affect this barony’s figures, the profile flags them rather than presenting the numbers as definitive.
  • No interpretation beyond what the data supports. The narrative does not speculate about historical events, social dynamics, or cultural meaning beyond what the recorded heritage and placename evidence directly attests.
Data caveats and limits
  • NMS Sites and Monuments Record is the product of survey campaigns conducted at different intensities across different counties and decades. Some baronies have been surveyed more thoroughly than others, and absolute counts should be read in that light. Sites destroyed by development before survey are typically not represented; sites in heavily forested or upland terrain are sometimes under-recorded.
  • NIAH coverage is broadly complete for the Republic of Ireland but the survey was conducted on a rolling county-by-county basis, and the most recent appraisal date varies. Buildings demolished or substantially altered after their original survey may still appear in the register; conversely, recent buildings of merit may not yet have been appraised.
  • Logainm classification applies a deliberately conservative pattern-matching approach to the Irish-language townland forms. The classifier prioritises true positives over recall: a townland may carry a heritage signal that the classifier doesn’t recognise, particularly where the diagnostic root has been heavily anglicised or where the townland name draws on a less common term. The 60,000+ townland records and ~9,800 classified placenames give a substantial signal at barony scale, but individual townland names should be checked against Logainm directly for definitive interpretation.
  • Period attribution. The chronological distribution reflects only those NMS sites that carry a recognised period attribution in the source data. Sites listed as “Unknown” period are excluded from the dated subset.
  • Boundary changes. Some baronies have undergone minor boundary adjustments since their 19th-century definition; the OSi 2019 generalised boundaries used here are the current statutory definition and may differ slightly from historical maps in border areas.
  • Bedrock geology is mapped at 1:100,000 scale, which means local variation within a barony — small pockets of different rock type, mineral veins, alluvium overlying bedrock — is generalised. The dominant-system and rocktype figures are area-weighted, so a barony reading “70% Carboniferous limestone” may still contain small but archaeologically important pockets of older or younger rock. Around 3% of GSI polygons do not match the lexicon and contribute no rocktype or system attribution.
Data sources
  • National Monuments Service — Sites and Monuments Record (SMR)
    Contributes archaeological site records, classifications, periods, and recorded protection-zone status.
    © Department of Housing, Local Government and Heritage · Licence: Open data, Creative Commons Attribution 4.0 (CC BY 4.0)
    https://data.gov.ie/dataset/national-monuments-service-archaeological-survey-of-ireland
  • National Inventory of Architectural Heritage (NIAH)
    Contributes listed-building records and architectural-significance grades.
    © Department of Housing, Local Government and Heritage · Licence: Open data, Creative Commons Attribution 4.0 (CC BY 4.0)
    https://data.gov.ie/dataset/national-inventory-of-architectural-heritage-niah-national-dataset
  • Logainm — Placenames Database of Ireland
    Contributes Irish-language and English townland names, civil parish associations, and barony assignments for the heritage-placename classifier.
    © Government of Ireland, Placenames Branch · Licence: Creative Commons Attribution-NoDerivs 3.0 Ireland (CC BY-ND 3.0 IE)
    https://www.logainm.ie/
  • Ordnance Survey Ireland — National Statutory Barony Boundaries 2019
    Contributes the canonical 280 barony boundaries (generalised 20m).
    © Ordnance Survey Ireland / Government of Ireland · Licence: Open data, Creative Commons Attribution 4.0 (CC BY 4.0)
    https://data-osi.opendata.arcgis.com/
  • EURODEM — European Digital Elevation Model
    Contributes elevation, slope, and topographic-wetness statistics, plus the hillshade rendering on each barony’s topographic map.
    © Maps for Europe · Licence: Open data
    https://www.mapsforeurope.org/datasets/euro-dem
  • ESA WorldCover
    Contributes land-cover classifications for grassland, woodland, cropland, wetland, urban, and water statistics.
    © European Space Agency · Licence: Creative Commons Attribution 4.0 (CC BY 4.0)
    https://esa-worldcover.org/en
  • Geological Survey Ireland — 1:100,000 Bedrock Geology
    Contributes bedrock geological data: dominant geological system (Carboniferous, Devonian, etc.), rock-type composition, and formation-level mapping, with the GSI Bedrock Lexicon providing descriptive attributes.
    © Geological Survey Ireland · Licence: Open data, Creative Commons Attribution 4.0 (CC BY 4.0)
    https://www.gsi.ie/en-ie/data-and-maps/Pages/Bedrock.aspx

Explore more: Search any of the 280 ROI baronies, browse by historical province, or read the methodology and data sources for the full Republic of Ireland Heritage Tool.

Spotted an error? This dataset is updated continuously. Email contact@danielkirkpatrick.co.uk with corrections, missing records, or suggestions for improvement.