Elizabeth Mackenzie Peerage person ID=231670 (b. 1705) Parents Sir James Mackenzie, Lord Royston Elizabeth Mackenzie Children Sir John Stewart of Grandtully, 4th Bt. Siblings George Mackenzie Anne Dick Elizabeth Cockburn Mary Cockburn Sir Archibald Cockburn, 5th Baronet George Cockburn Partners Sir John Stewart of Grandtully, 3rd Bt.