Located in a slight SSE-NNW valley, and c. 700m WSW of the early monastery (ME012-016----) that became the parish church of Castletown parish. The barony of Morgallion was granted by Hugh de Lacy after 1172 to Gilbert de Nangle, and as this was the caput or centre of the fief the motte may have been erected shortly after the grant. This is a flat-topped, subcircular earthen mound (dims of top 28.5m NW-SE; 23.6m NE-SW; diam. of base 50m NW-SE; H 7m at NW to 7.6m at SE) defined by wide fosse (Wth of top c. 10m; Wth of base 2.5-3m; ext. D 2.1m at NW to 3.3m at SE) with an external bank that is most massive (Wth of base 11m; ext. H 2.5m) SE-S (max. ext. dims 80m NW-SE). There is a gap in the outer bank at ENE and there are slight traces of a bank at the summit of the mound. The mound is grass-covered with some scrub and it has some mature deciduous trees. The outer bank extends into a crescent-shaped berm (Wth of top 9m) defined by a scarp (H 2m) with a field bank and outer ditch beyond W-N, which could have served as a bailey. A grass-covered rectangular area (dims c. 60m NE-SW; c. 50m NW-SE) extends S from the motte, bounded by a scarp at NW and traces of a fosse at S that merges into the hillslope at E. This bailey is cut by a defunct N-S railway at W. The above description is derived from the published 'Archaeological Inventory of County Meath' (Dublin: Stationery Office, 1987). In certain instances the entries have been revised and updated in the light of recent research. Compiled by: Michael Moore Date of revision: 21 July 2016 Amended: 2 August 2022, 15 December 2022

Description Source: Department of Housing, Local Government & Heritage