 This tradition was thought to originate from the Crusades because, "it is said the heads of these two families went together to the war, and each solemnly engaged with the other to lay him in his family burying-place if he should fall in battle".In 1487 Iain Maclachlan of Strathlachlan, witnessed a bond by Dougall Stewart of Appin to Colin Campbell, 1st Earl of Argyll.Iain died sometime around 1509 and his son Gillescop (or alternately "Archibald") married a daughter of Iain Lamont of Inveryne, the chief of Clan Lamont.