	Conflict with the Welsh continued, and following a period of detente under Henry II in the 1160s, the de Mortimer and de Braose Marcher families attacked their Welsh rivals during the 1170s, leading to a Welsh assault on nearby Abergavenny Castle in 1182. In response, the Crown readied the castle to face an attack and, between 1184 and 1186, work costing £128 was carried out by Ralph of Grosmont, a royal official, probably to build a stone curtain wall around the inner ward and to add a small stone keep to the defences.