Foster, Joseph, Pedigrees of the County Families of Yorkshire, Vol I - West Riding, part 1. London: Winfred Head, 1874. Available at https://familysearch.org/search/catalog/357012. Information from this source tagged as [Ref: Foster Yorkshire v1pt1 [A-Z]*].
Sources for birth and parent Information
father:
[Ref: Foster Yorkshire v1pt1 FOLJAMBE]
Sources with Information about marriage to Godfrey De FOLESCHAMP
names:
Godfrey De FOLESCHAMP & Unknown Daughter of Uchtred, Saxon Lord of
Elton [Ref: Foster Yorkshire v1pt1 FOLJAMBE],