University of Hull Royal Database (England), Author Address: @ The Complete Peerage vol.V,pp.391-392. Merges William FitzAlan,
son of Alan FitzFleald & a daughter of Sheriff Warine of
Shropshire, with the William FitzAlan who married Isabel de Say
(his son in this db).

The cited information was published by University of Hull, Hull, UK HU6 7RX, 1994, 1995, 1996 (Ref: The Complete Peerage vol.V,pp.391-392. Merges William FitzAlan,
son of Alan FitzFleald & a daughter of Sheriff Warine of
Shropshire, with the William FitzAlan who married Isabel de Say
(his son in this db).) The author/originator was Brian Tompsett, Dept of Computer Science.

• Source Notes

  Usually reliable but sometimes includes hypothetical lines,
  mythological figures, etc.

• References (2)
  • Parent Source: University of Hull Royal Database (England), Author Address:
  • Individual: William FitzAlan