The Norse held sway throughout the Hebrides from the 9th century until after the Treaty of Perth in 1266. In the post–Norse period the most powerful clans on Skye were Clan MacLeod, originally based in Trotternish, and Clan Macdonald of Sleat. Following the disintegration of the Lordship of the Isles, the Mackinnons also emerged as an independent clan, whose substantial landholdings in Skye were centred on Strathaird. The MacDonalds and the MacLeods were bitter rivals, and two major battles of this period were fought between the clans at Harta Corrie and Coire Na Creich in the Cuillin: