He [William de Moleyns] married, before 12 March 1352, Margery, then aged 15 1/2, daughter of Sir Edmund BACOUN, of Norfolk, by his 2nd wife, Margery POYNINGS, whose heir she was. He died 14 February 1380/1. His widow died 1 June 1399. Complete
Peerage IX:39-40
Title: Complete Peerage of England Scotland Ireland Great Britain and the United Kingdom, by G. E Cokayne, Sutton Publishing Ltd, 2000
Page: IX:40