There appears to be two MacAulay families, one settled about the 13th century at Ardincaple and the other in the Island of Lewis. The Ardincaple MacAulays were a branch of Clan Alpine, and in 1591 were associated with the MacGregors as septs. Their lands were sold to the Duke of Argyll in 1787. The MacAulays of Lewis followed the MacLeods of Lewis and claim to be descended from Aula or "Olave the Black" who, in the 13th century, was King of Man and the Isles. MacAulays on the Highland mainland associated with Clan MacKenzie.