A link between the flight of the Briouzes and Rǫgnvaldr appears in the thirteenth-century "Histoire des ducs de Normandie et des rois d'Angleterre", which states that, whilst "en route" to Scotland just before their capture, the Briouzes stayed on Mann for four days. Although it is impossible to know for certain whether Rǫgnvaldr sanctioned the arrival of the fleeing Briouzes, their close connection with the Lacys, and Rǫgnvaldr's close connection with Courcy—a man who had been forced from his Irish lands by the Lacys—both strongly suggest that cooperation between Rǫgnvaldr and Briouze is unlikely. In any case, the English depredations on Mann are corroborated by other sources, such as the "Annals of Loch Cé", and the continuation of twelfth-century "Historia rerum Anglicarum", In his own account of events, John declared that he had learned of the capture of Briouze's wife and children whilst at Carrickfergus, a statement which may hint that the attack on Mann was punitive in nature.