A motte is the flat-topped or rounded earthen mound that formed the raised platform of a motte-and-bailey castle, a form of fortification introduced to Ireland by the Normans in the twelfth and thirteenth centuries. That a field here should quietly preserve that name while the mound itself has largely vanished is, in its own way, a small archaeological story worth telling.

According to a 1992 survey compiled by Geraldine Stout, the mound at Gracedieu was at that time a modest, round-topped earthwork with a diameter of eleven metres and a height of just 1.6 metres, sitting within pasture. Even then it was already in a compromised state, partially truncated by a field boundary running east to west. The subsequent assessment is blunt: the mound is believed to have been ploughed out, with whatever material survived absorbed into that same field boundary. To the north and west of the mound's location runs a lane that once led to a nunnery, recorded separately in the archaeological inventory. Locally known as the nun's road, it is now, as the record notes without ceremony, filled with agricultural detritus. The proximity of the two features, the mound and the nunnery lane, suggests a landscape that was once rather more organised and inhabited than it currently appears.

Visitors who come looking for a dramatic earthwork will be disappointed, and that honesty is worth stating plainly. What remains is the boundary into which the mound's material was folded, and the field name itself, which survives in local use and on survey records. The site lies to the south of the tillage field in question, in an area that reads, on the ground, as ordinary farmland. Anyone with a serious interest in the location would do well to cross-reference the Archaeological Survey of Ireland records before visiting, since access depends entirely on private land and working agricultural ground. The value here is less in what can be seen than in understanding how completely a named medieval feature can dissolve into a hedgerow.