Clan MacDonald of Keppoch (Scottish Gaelic: Clann Dòmhnaill na Ceapaich [ˈkʰl̪ˠãũn̪ˠ ˈt̪õː.ɪʎ nə ˈkʲʰɛʰpɪç]), also known as Clan Ranald of Lochaber or Clan MacDonell of Keppoch, is a Highland Scottish clan and a branch of Clan Donald. The progenitor of the clan is Alistair Carrach MacDonald, 4th great-grandson of the warrior Somerled and the Lords of the Isles. The MacDonalds of Keppoch occupied the territories of Keppoch and Lochaber between Loch Linnhe and Loch Leven, which are located in Inverness-shire. The clan chief is traditionally designated as "son of Ranald's son" (Scottish Gaelic: Mac Mhic Raonuill).