 Although the Chronicle of Man maintains that Lagmann voluntarily vacated his throne, there is reason to suspect that he was forced from power. In about 1096, the chronicle claims that the leading Islesmen sought assistance of Muirchertach Ua Briain, King of Munster (died 1119), and petitioned him to provide a regent from his own kin to govern the kingdom until Lagmann's younger brother, Amlaíb (died 1153), was old enough to assume control. The chronicle's account could be evidence that, by about 1096, Lagmann faced a faction formed around his younger brother; and that, when this faction was unable to topple Lagmann by itself, it approached Ua Briain for assistance in placing Amlaíb upon the throne.
