When Archibald Macnab inherited the family state at Killin from his uncle Francis, it was already burdened with debt. Unable to curb his own extravagant spending, in 1822 he had to flee from his creditors to avoid imprisonment, and made his way to Canada. In November 1823 the government granted him a deed for 81,000 acres to build a town, which he quickly named after himself. He encouraged his clans to emigrate but his tyrannical behaviour led to complaints from the new settlers and after various lawsuits and an official enquiry Macnab was expelled. He returned to Scotland in 1853 and died in France in 1860. After his death, the clan chieftainship lay dormant until it was confirmed on Archibald Macnab of Arthurstone, 22nd chief in 1955.