Note that he indicates that Richard Wydevill and Joan Bedlisgate had one child (Richard, born about 1405). He does not cite any sources.
'RICHARD Wydeville of Grafton (-[Dec 1441]). m ---, daughter of [JOHN Bedlisgate & his wife --- Beauchamp of Wellington, Somerset] (-after 1448). Richard & his wife had one child [Richard, born est. 1405].'