 By this point, Somerled's descendants had formed into three families – the heirs of Donald (the MacDonalds, led by Aonghas Óg MacDonald), those of Donald's brother (the Macruari, led by Ruaidhri mac Ailein), and those of Donald's uncle (the MacDougalls, led by Alexander MacDougall).At the end of the 13th century, when king John Balliol was challenged for the throne by Robert the Bruce, the MacDougalls backed Balliol, while the Macruari and MacDonalds backed Robert.When Robert won, he declared the MacDougall lands forfeit, and distributed them between the MacDonalds and Macruari (the latter already owning much of Lorne, Uist, parts of Lochaber, and Garmoran).