Robert de Ros [c] b abt 1120, of Helmsley, Yorkshire, England, d 1162/63. He md Sibyl de Valognes [d] abt 1142. She was b abt 1126, Yorkshire, England, d bef 1218, Yorkshire, England.
Children of Robert de Ros and Sibyl de Valognes were:
Everard de Ros b abt 1148.
Joan de Ros b abt 1150, of Helmsley, Yorkshire, England. She md Stephen de Meinell abt 1166, son of Robert de Meinell.
Confirmed to Rievaulx the gift of his uncle Walter Espec in 1147-53, for the souls of his father and his brother, Everard. He was sometimes constable, probably to the Count of Aumale, lord of Holderness. He attested a charter of Count William about 1150, as well as Henry II's charter to Scarborough, where for several years, he was in charge of works at the King's castle.