The evening before the Battle of Inverlochy he met with Montrose in Lochaber. (was ) present at the battle accompanied with 30 men only. After which coming home he raised his whole Clan, and joined Montrose immediately after the Battle of Alford, and continued with him till after the Battle of Kilsyth. When coming home he and the brave Alasdair MacColla defeated a party of Argyle's consisting of seven hundred men at Laggan mor in Lorn, they having but about two hundred, the rest of their men being severed from them by the darkness of the preceding night. He made ready a second time for joining Montrose, and, after he began his march, he was acquainted that the King had ordered Montrose to disband his Army. Upon () Maclean kept himself quietly at home. Sometime after Sir David Leslie coming to the Island of Mull with a strong party of horse and foot obliged him to deliver eight Irish gentlemen, who sheltered themselves with him. Seven of whom were executed at Aros, the eighth making his escape by the swiftness of his horse.〔