| b 1342, | Nicholas De Segrave, [Baron Segrave] | > | d SEENOTES, | John De Segrave, [Baron] | Maud Lucy, [Baroness] |
| Stephen John De_Seagrave | b 1256 | Hugh Du Plessis, [Sir Knight] | ||
| | b 1320 | Christiane Du Plessis, [Baroness] | |||
| John De Segrave, [Baron Segrave] | b 1263 | |||
| |b 1314 | | | |||
| |d 01 Apr 1353 | Alice 'Aline' Arundell | |||
| | | b 1289 | |||
| John De Segrave | d 12 Dec 1325 | Henry III King England | > | |
| |Blanche De Mowbray, [Baroness] | Edward I 'Longshanks' England, King | Eleanor Countess Of Provence, Queen of England | > | |m 1349 | Thomas Prince Of England | b 17 Jun 1239 | Philippe III King France | > |
| |, , , Dispensation | |b 01 Jun 1300 | Marguerite Princess Of France | Marie De Brabant | > |
| Margaret Plantagenet, [Duchess] | d 04 Aug 1338 | b 1279 | ||
| b 1322 | | | Roger Halys, [Sir Knight] | ||
| d 24 Mar 1398 | Alice De Hales, [Countess] | b 1275 | ||
| b 1302 | ||||
| d 1327 | ||||