Margaret de Beaumont was born circa 1127 to Robert de Beaumont, 2nd Earl of Leicester (1104-1168) and Amice de Gael de Montfort and died 1186 of unspecified causes. She married Raoul V de Tosny (-1162) .
Children
| Name | Birth | Death | Joined with |
| Roger IV de Tosny (c1160-c1209) | 1160 | 1209 | Constance de Beaumont-au-Maine (-aft1226) |
| Baudouin de Tosny | |||
| Ida de Tosny (c1150-) | 1150 United Kingdom | Henry II of England (1133-1189) Roger Bigod (c1144-1221) | |
| Robert de Tosny | |||
Residences
Footnotes (including sources)
| ‡ General |