Surname: Seaforth | Name index 6 people Francis Humberston Mackenzie Lord Seaforth * 1754 George Mackenzie, 2nd Earl of Seaforth James Alexander Francis Humberston Stewart-Mackenzie, Baron Seaforth * 1847 Kenneth Mackenzie 4th Earl of Seaforth * 1661 N., 3rd earl of Seaforth William Mackenzie 5th Earl of Seaforth Surname