In 1210, the "Chronicle of Mann" reports that John led five hundred ships to Ireland. Whilst Rǫgnvaldr and his men were absent from Mann, part of John's forces are recorded to have landed and ravaged it for a fortnight before departing with hostages. There is does not appear to be any other evidence of possibly poor relations between Rǫgnvaldr and John at this time. Since the men were clearly on friendly terms between 1205 and 1207, John's assault on the island does not appear to be connected to Rǫgnvaldr's earlier campaigning with (the then-disgraced) Courcy. Instead, it is likely that the devastation was related to John's souring relations with the Lacy and the Briouze families. In 1208, William de Briouze, with his wife and family, fled from John to Ireland, where they were harboured by the Lacys. When John arrived in Ireland in 1210, the Briouzes fled towards Scotland, and were apprehended in Galloway by Courcy's close associate and Rǫgnvaldr's kinsman Donnchad mac Gilla Brigte, Earl of Carrick.