He [John de Burghersh] married, in or after 1372, Ismania, widow of SirJohn RALEGH, of Nettlecombe, Somerset, who died in 1372, and daughter and coheir of Simon DE HANHAM or HANNING, of co. Gloucester. He died s.p.m., 21 September 1391, when the Barony of Kerdeston fell, according to modern doctrine, into abeyance between his two daughters and coheirs. His widow's dower was assigned 21 November 1391 and 21 March 1391/2. She married, 3rdly, Lawrence BERKEROLLES, son and heir of Sir Roger BERKEROLLES, of Coity, co. Glamorgan. He died December 1411. She died in September 1420. [Complete Peerage VII:193-5, (transcribed by Dave Utzinger)]