*William de Ros 1st Lord of Helmsley
born about 1255
died 1316

father:
*Robert de Ros
born before <1245> Hamlake Castle, Yorkshire, England
died 1285

mother:
*Isabel d'Aubigny (Albini)
born 1233 Belvoir, Leicestershire, England
died 15 June 1301
married 1243/44 Leicestershire, England

siblings:
Mary de Ros born about 1249 Helmsley, Yorkshire, England
*Isabel Ros born about 1259 Ingmanthorpe, England died 1309 Thweng, England
Joan de Ros of Helmsley died 13 October 1348

spouse:
*Maud (Matilda) de Vaux
born about 1258 Freiston, England
died before1316 England

children:
*William de Ros 2nd Lord of Helmsley died 1342/43
Agnes de Ros

biographical and/or anecdotal:

notes or source:
LDS
ancestry.com