Compact tree of Sybil De St Martin
| Jordan St Martin 1170–1222 | |||||||||||||
| William De St Martin 1222–1291 | Sir Reginald De St Martin 1250–1315 | Amphelicia … 1225– | |||||||||||
| Lawrence De St Martin 1266–1320 |
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Sybil Lorty … 1285–1349 | |||||||||||
| Alain Plunknett 1230– | Emma Plunknett 1255–1306 | ||||||||||||