Alastair Carragh MacDonald (Alexander the Strong) (d. c.1440) was a son of John of Islay, Lord of the Isles and Margaret Stewart, daughter of King Robert II of Scotland and Elizabeth Mure.
[1] He is the eponymous ancestor of Clan MacDonald of Keppoch.
For his involvement in the 1431 insurrection of Donald Balloch and the Battle of Inverlochy, Alistair had a large portion of his lands confiscated, with those lands transferred to the Malcolm Beg Mackintosh, Chief of Clan MacKintosh.
However, Alistair never gave up his lands but held them by his sword.
1365), daughter of Malcolm, Earl of Lennox, they had the following known issue: