| | Sir Rhys ap Rhys 1327–1380 Isabel de Stackpole 1330–1376 | | |
| | Joan de Somerville 1315–1376 Sir Rhys ap Griffith 1288–1356 | | |
Elizabeth de Somerville …–1355 | | |
| | Sir Philip de Somerville 1287–1355 Margaret de Pype 1296–1352 | | |
| | Sir Robert de Somerville 1255–1297 Isabel de Merlay 1258–1300 | | |
| | John de Somerville …–1280 | | | | Roger de Somerville III 1200–1245 | | | | Roger de Somerville II …–1215 | | | | Roger de Somerville I …–1195 | | | | Walter de Somerville II …–1176 |
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