Saint Patrick was captured by raiders from the clans governed by Niall of the Nine Hostages, and this region is that to which Patrick returned, being familiar with the people, language, customs and lands. The first clan to convert to Christianity as the result of St Patrick's efforts was Cenel Chonaill, the principal branch of which are the O'Donnells also known at one time as Clan Dálaigh. Connall was a son of Niall of the Nine Hostages. As a result of their acceptance of Christianity, Patrick blessed the clan members; the sign of the cross appeared on the chieftain's shield and this became not only the heraldic device for the clan but also for County Donegal.