 In the Jacobite Rising of 1715 Lachlan Maclachlan of that Ilk "signed the Address of Welcome to the Old Chevalier, the rightful King James VIII Stuart, on his landing in Scotland".Archibald Brown, in "The History of Cowal", wrote, "The chief of MacLachlan appeared with the Earl of Mar at Sheriffmuir as Colonel in the Pretender's army, and for this act it is said Campbell of Ardkinglas followed MacLachlan like a sleuthhound for five years and shot him dead in 1720".Lachlan, the seventeenth chief of Clan Maclachlan played a part in the Jacobite Rising of 1745, and lost his life leading the clan at the Battle of Culloden.