| b 1223, Lincoln, Lincolnshire, , England | ||||
| d 10 Mar 1288, | Richard Fitz_Eustace | > | c 1288, | John De Lacie | Albreda De Lisoures | > |
| Roger De Lacie | b 1150 | Geoffrey De De_Mandeville | > | |
| | b 1171 | Alice Mandeville | Rohese De_Vere | > | |
| John De_Lacy | d 1211 | b 1140 | Roger De Clare, [Earl] | > |
| |b 1192 | | | Richard De Clare, [Earl] | Maud (Matilda) De Saint_Hilary | > |
| |d 22 Jul 1240 | Maud (Matilda) De Clare | b 1162 | William Fitzrobert | > |
| | | b 1175 | Amice Fitzrobert, Countess | Hawise De Beaumont | > |
| Maud De_Lacy | d 1213 | b 1160 | Robert De Quincy | > |
| |Richard De Clare | Saher IV De Quincy, Earl | Orabella | |m 02 Feb 1238 | Robert De Quincy | b 1155 | Robert III De Beaumont, [Earl Leicester] | > |
| | | |b 1172 | Margaret De Beaumont | Petronilla Grentmesnil | > |
| Margaret De Quincy | c 1219 | b 1154 | Ranulph De Meschines, Earl of Chester | > |
| b 1208 | | | Hugh 'Kevelioc', Earl Chester | Matilda Maud Fitzrobert | > |
| d 1258 | Hawise De Meschines, [Countess] | b 1147 | Simon De Montfort | > |
| b 1180 | Bertrade De Montfort_(Evreux | Maud | ||
| d 1243 | b 1155 | |||
| 1 | < | Gilbert De Clare, Earl | 2 | Thomas De Clare | 3 | Bozo De Clare | 4 | Richard De Clare | 5 | Margaret De Clare | 6 | Maud De Clare | 7 | Benedict De Clare | 8 | < | Roese De Clare |