 John De Beauchamp, son of Sir Thomas de Beauchamp, 3rd Earl of Warwick and Lady Katherine de Mortimer.Born 1339 at Warwick, Warwickshire, England, died 1361, 21 or 22 years Married/ Related to: N.N. Child: 1.  Marguerite De BeauchampBorn ± 1374 at Arundel, Norfolk, England, died Jun 30, 1420, approximately 46 years | |||