 The clan chief and 9th Earl of Eglinton was on the Privy Council of King William and Queen Anne of the United Kingdom.In 1715 during the first rebellion the chief of Clan Montgomery, 9th Earl was involved in training soldiers for the government.In 1757 Archibald Montgomerie, 11th Earl and chief of Clan Montgomery raised the British 77th Regiment of Foot from members of the Montgomery clan, along with other clans.