de Roos
Generation 23:
Juetta de Roos
+Sir Geoffrey le Scrope, Justice of the Common Pleas, Chief Justice of the King's Bench
--Sir Henry le Scrope, 1st Lord Masham, Warden of Calais & Guines
--Sir Thomas le Scrope
--Sir William le Scrope
--Sir Stephen le Scrope
--Geoffrey le Scrope, Canon of Lincoln
--Beatrice le Scrope, wife of Sir Andrew Luttrell
--Constance le Scrope, wife of Sir Geoffrey Luttrell
--Ivette le Scrope, wife of John de Hotham
Generation 24:
Sir William de Roos
+Eustache FitzHugh
--Sir William de Roos
--Isabel de Roos, wife of Sir Marmaduke de Thweng
--Lucia de Roos, wife of Sir Robert de Plumpton
--Thomas de Roos
--Margaret de Roos
--Mary de Roos, Prioress of Rosedale
--Juetta (Ivette) de Roos, wife of Sir Geoffrey le Scrope
Generation 25:
Sir William de Roos
+Lucia FitzPiers
--Sir Robert de Roos
--Sir Peter de Roos
--Sir William de Roos
--Sir Alexander de Roos
--Sir Herbert de Roos
--John de Roos
--Lucy de Roos, wife of Sir William de Kyme
--Alice (Alicia) de Roos, wife of Sir John Comyn & Sir James de Byron
Generation 26:
Robert de Roos, Magna Carta Surety, 4th Baron Hamlake, Sheriff of Cumberland
+Isabella MacWilliam
--Sir William de Roos
--Sir Robert de Roos, Chief Justice of the King's Bench
Generation 27:
Everard de Roos, Baron of Hemsley
+Roese Trusbutt
--Piers de Roos
--Robert de Roos, Magna Carta Surety, 4th Baron Hamlake, Sheriff of Cumberland
Generation 28:
Robert de Ros, 2nd Lord Hamlake
+Sibyl de Valoines
--Everard de Roos, Baron of Hemsley
Generation 29:
Peter de Ros
+Adeline Espec
--Robert de Ros, 2nd Lord Hamlake
More information: https://en.wikipedia.org/wiki/William_de_Ros,_1st_Baron_de_Ros