WD
William de Ros
1200 – 1264
Vitals
Born
c. 1200
Died
1264
Family
Spouse
Children
About
William de Ros of Helmsley held the Yorkshire barony in the mid-thirteenth century.
Research notes
✓ DOCUMENTED (web-confirmed 25 Jul 2026): WILLIAM DE ROS of Helmsley (d.1264/65), the elder son of Robert de Ros the Magna Carta surety, who inherited HELMSLEY (his brother Robert took Wark). m. LUCY FITZPIERS. Father of Robert de Ros (our line). Direct ancestor. Added 25 Jul 2026.