Roger de Clare, 3rd Earl of Hertford, was born 1116 to Richard de Clare, 1st Earl of Hertford (1094-1136) and Alice de Gernon (1102-1129) and died 1173 of unspecified causes. He married Maud de St. Hilary (c1136-1195) .
Children
| Name | Birth | Death | Joined with |
| Richard de Clare, 4th Earl of Hertford (c1153-1218) | 1153 | 30 December 1218 | Amice FitzRobert, Countess of Gloucester (c1160-1220) |
| Mabel de Clare (1160-1204) | |||
| James de Clare (c1162-?) | |||
| Eveline de Clare (c1164-1225) | |||
| Roger de Clare (1168-1241) | |||
| John de Clare (c1170-?) | |||
| Henry de Clare (c1172-?) | |||
Footnotes (including sources)
| ‡ General |