William de Ros (c1193-c1264)

Main

Sir William de Ros of Helmsley was born circa 1193 to Robert de Ros (c1172-1226) and Isabel Avenal (c1170-) . He married Lucy FitzPiers (-c1266) .

Children

Offspring of Sir William de Ros of Helmsley and Lucy FitzPiers (-c1266)
Name	Birth	Death	Joined with
Robert de Ros (c1230-1285)
William de Ros (c1240-)

‡ General

Sir William on Genealogics, July 2010, which shows his brother Robert having issue but brothers Peter and Alexander with none, and names Lucy's parents, citing three books on her page
ROBERT de Ros "Fursan" and family on Medieval Lands, updated July 2010, which indicates unknown parentage for Lucy and no issue for William's brother Robert (with no other siblings shown)
Sir William on thePeerage, July 2010, which shows that his brothers John and Sir Robert had children but their lines go only a couple of generations, and names Lucy and her father

Ω Birth

¶ Death