| b 1309, , Salisbury, Wilsthire, England | d 1342, | William De_Montacute | ||
| Simon De Montagu, [Baron Montagu] | b 1210 | |||
| | b 1250 | Beota | |||
| William De Montagu, [Baron Montagu] | d 26 Sep 1316 | b 1212 | ||
| |b 1275 | | | Amauri De Saint_Amand | ||
| |d 18 Oct 1319 | Hawaise De Saint_Amand | b 1211 | ||
| | | b 1252 | Mrs-Amauri De Saint_Amand | ||
| Edward Montacute | d 1287 | b 1213 | Thurstan De Montfort | > |
| | | Peter De Montfort | | | Peter De Montford | b 1220 | Henry Aldithley |
| | | |b 1230 | Alice De Aldithley | ||
| Elizabeth De Montfort, [Baroness] | d 1287 | b 1225 | ||
| b 1271 | | | John De Warr | ||
| d 1345 | Matilda De La Warr | b 1216 | ||
| b 1242 | ||||