| | Sir William Gascoigne X 1398–1466 Margaret Clarell 1397–1441 | | | | Sir William IX Gascoigne 1366–1422 | | | | Sir William VIII Gascoigne 1335–1419 Elizabeth Mowbray 1340–1391 | | | | Sir William VII Gascoigne 1293–1373 | | |
| | | Sir Alexander Mowbray 1314–1368 Elizabeth Musters 1316–1347 | | |
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| | | Matilda Montgomery 1380–1456 | | | | William Clarell 1357–1383 Elizabeth de Reygate …–1391 |
| | | Nicholas Montgomery 1355–1424 Margery Fojambe 1363–1453 | | | | Walter Montgomery 1314–1374 Maud de Furnival 1333–1385 | | |
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