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Dundonald motte is a Norman motte-and-bailey earthwork located in Castlereagh, County Antrim, Northern Ireland. The monument consists of a substantial defensive mound typical of early medieval fortifications, likely constructed in the twelfth century following the Anglo-Norman arrival in Ulster. It occupies sandstone bedrock of the Sherwood Sandstone Group, composed of sandstone, siltstone and mudstone laid down during the Ladinian period of the Triassic era.
The motte stands as evidence of Norman military strategy in the medieval Ulster landscape, with its characteristic elevated mound designed to command the surrounding terrain. A possible souterrain—an underground passage or chamber—has been identified at the site, suggesting earlier Iron Age or early medieval occupation beneath the Norman fortification, a common pattern where later invaders built upon older defensive positions.
The monument is protected by the Historic Environment Division under the designation 6313, acknowledging its significance to the archaeological and historical record of medieval Castlereagh. The site's geological foundation in local Sherwood Sandstone would have influenced construction techniques and the stability of both the Norman mound and any earlier subterranean structures beneath it.
Dundonald motte. motte & possible souterrain is a scheduled monument protected by Department for Communities NI under reference 6313. View the official record →
Dundonald motte is a Norman motte-and-bailey earthwork located in Castlereagh, County Antrim, Northern Ireland. It is designated a Scheduled Ancient Monument by DfC Northern Ireland (NISMR) under reference 6313.
Dundonald motte. motte & possible souterrain dates from the e.christ. period, and is classified as a motte. It is one of over 32,000 scheduled monuments protected across the UK.
Dundonald motte. motte & possible souterrain is a Scheduled Ancient Monument, legally protected by DfC Northern Ireland (NISMR) — the body responsible for designating and safeguarding heritage sites in Ni. The official designation reference is 6313.
Several scheduled monuments lie within 10 km, including Rath (4.3 km), Rath (5.8 km), Motte (6.1 km).
This page is just one thread. A full Aubrey report pulls together 14 strands of Dundonald motte. motte & possible souterrain's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Dundonald motte. motte & possible souterrain stands on Sherwood Sandstone Group, bedrock that formed in the Ladinian. The rock here is sandstone, siltstone and mudstone.