Máel Petair of Mearns is the only known Mormaer of the Mearns.
His name means "tonsured one of (Saint) Peter".
[1] Little is known of him except that, in 1094, he is said to have killed King Duncan II of Scotland, suggesting he was an associate of Donald III of Scotland.
[2] His father is believed to have been a man called Loren.
This biography of an earl in the Peerage of Scotland is a stub.