Earl of Sefton was a title in the Peerage of Ireland created in 1771 for the 8th Viscount Molyneux. The Earls of Sefton held the subsidiary titles Viscount Molyneux, of Maryborough in the Queen's Coun

Sefton is a village and civil parish in the Metropolitan Borough of Sefton in Merseyside, England. Located to the south west of Maghull and to the north east of Great Crosby, it is on the flood plain