topple Lǫgmaðr by itself, it approached Ua Briain for assistance in placing Óláfr upon the throne. Ua Briain was certainly a formidable potential ally, having recently imposed his dominance over the kingdoms of Connacht, Leinster, Mide, and Dublin as well. In fact, it was through his conquest of the latter that Ua Briain had banished Lǫgmaðr's father from Ireland once and for all, and thereby secured control of Dublin's awesome naval power. In consequence of this predominance, the clause as stated by the chronicle—that Ua Briain was to provide the Isles with a regent from his own kin—may well have been a condition on his intervention, rather than a request of the Islesmen themselves. Whatever the case, the chronicle reveals that Ua Briain then installed Domnall mac Taidc upon the throne. Although Domnall had previously opposed Ua Briain over the kingship of Munster, he was the son of Ua Briain's brother, and further possessed strong familial connections with the Isles through his maternal descent from Echmarcach mac Ragnaill, King of Dublin and the Isles. In fact, the Annals of Ulster appears to indicate that at least two apparent members of Echmarcach's family were killed less than a decade before in a repulsed invasion of Mann. As a result, Domnall may have been the leading male representative of Echmarcach's family. The slaying of Domnall's brother, Amlaíb, as recorded by the Annals of the Four Masters in 1096, suggests that Domnall and the rest of the Meic Taidc faced significant opposition in the Isles, possibly in the form of Lǫgmaðr's adherents. The chronicle credits Domnall with an oppressive three-year reign that ended when the leading Islesmen revolted against him, and drove him from the kingdom back to Ireland. Norwegian domination and diminishment The extent of Domnall's rule in the kingdom is unknown, and it is questionable whether he had any real authority in the northern Hebrides, furthest from Mann. In about 1097, Magnús sent a delegate named Ingimundr into the Isles to take possession of the kingdom. After installing himself in Lewis, Ingimundr was overthrown and killed whilst attempting to usurp the kingship. Ingimundr's rationale for seating himself upon an island (Lewis and Harris) on the edge of the kingdom may have been due to the fact that he was unable to gain any authority on Mann itself. In fact, the chronicle reveals that civil war erupted there the following year, and