Martyn Robson (1922-1970)
| +---Thomas Common (1848-1919)
+---Emily Common 
(1885-1979)
| +---Thomas Martyn (BEF 1674-)
| +---Philip Martyn (1702-)
| | +---Mary Congdon
| +---Robert Martyn (1733-)
| | +---Elizabeth ?
| +---Philip Martyn (1766-)
| | +---Elizabeth Webb
| +---Robert Martyn (1798-)
| | +---Mary Ann Warwick
| +---John Martyn (19 FEB 1826-30 MAR 1893)
| | +---Elizabeth Nicholls (1791-)
+---Elizabeth Martyn (09 JAN 1848-1916)
+---Fanny Grigg (ABT 1827-)