SEYMOUR, William (d.1391), of Hatch Beauchamp, Som. and Brobury, Herefs.

s. of Sir Roger Seymour of Undy, Mon. by Cecily, er da. of John, 2nd Lord Beauchamp of Som. and Margaret, da. of John, 1st Lord St. John of Basing, coh. of her bro. John, 3rd Lord Beauchamp (d.1361). m. Margaret, da. of Simon Brobury of Brobury, by Joan, da. of Sir Reynold de la Mare, 1s.CP, ii. 49-50; xii (pt.i), 59n; CPR, 1388-92, p. 400; C136/73/5.