Foster: of Brasenose Coll. 1627, B.A. 5 May, 1631, M.A. 28 June, 1634; canon of Chichester 1660, rector of Winchfield, Hants, 1660.
Probably the same as 'John Sephton', Clergy ID 78907.
See also Walker Revised, p. 360.
In his will, dated 15 July 1678 and proved 26 November 1679, Sefton left bequests to the poor of Sutton, Winchfield, South Stoke and Chichester, and 100 books to Chichester cathedral library (TNA, PROB/11/361).