Aonghus Óg of Islay

Aonghus Óg Mac Domhnaill, or Angus Og MacDonald, was chief of Clann Domhnaill and Lord of Islay, a younger son of Aonghus Mór. He first backed Edward I of England against John Balliol and rival Clann Dubhghaill, but after Robert the Bruce killed John Comyn in 1306 and claimed the Scottish crown, Clann Domhnaill appears to have switched its support to Robert, and members of the clan sheltered him.

The Bruce records him fighting at Bannockburn in 1314, and he received former Clann Dubhghaill lands. He may have died between 1314 and 1318.

Henry Lee recorded that he died in 1330 at Finlaggan and was buried on Iona. His son Eóin became the first Lord of the Isles.