Robert de Ros 
Robert was born in 1177. Robert's father was Everard de Ros and his mother was Roese Trussebut. His paternal grandparents were Robert de Ros and Sibyl de Valognes; his maternal grandfather was William Trussebut. He was an only child. He died at the age of 49 on December 11th, 1226.General Notes
Robert de Ros, 1st Lord Ros of Helmsley (maybe the fourth baron by tenure of Hamlake) was Baliff of the district of the royal Castle of Bonneville sur Toques, Normandy. He has an extensive biographical entry in the Dictionary of National Biography.
In 1210 he served with King John in Ireland. Robert de Ros, 1st Lord Ros of Helmsley also went by the nick-name of Robert 'Furfan'. He held the office of Sheriff of Cumberland between 1213 and 1215. He was one of the 25 barons selected to oversee the provisions of the Magna Carta.
There is a difference in genealogies. It is unverified whether Robert was married to William I's (alleged) sister Isabella, or if he was the second husband of William's daughter Isabel.
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Individual Additional Information
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Associated external link http://en.wikipedia.org/wiki/Robert_de_Ros
