Ranulph de Mainwaring/Mesnilwarin was born circa 1030 in Normandy, France to Eudo-au-Capel of de Haye and Muriel De Contreville . He married L. Alfairnsdatter 1045-deceased .
Children
| Name | Birth | Death | Joined with |
| Richard de Mainwaring (c1055-) | 1055 England | ||
Siblings