+---John Salmon (ABT 1821-05 OCT 1907)
+---John Henry Salmon (1851-1903)
| | +---James Trethewy (ABT 1517-ABT 1573)
| | +---Richard Trethewy (BEF 1550-)
| | +---Robert Trethewy (BEF 1575-DEC 1623)
| | | | +---William Hawkins
| | | +---Joan Hawkins 
(ABT 1530-)
| | +---Thomas Trethewy (ABT 1596-ABT 1664)
| | | +---Ann Burgess (-ABT 1637)
| | +---Robert Trethewy (AFT 1642-ABT 1690)
| | | | +---William Jolley
| | | +---Isabel Jolley (ABT 1606-)
| | +---Anthony Trethewy (ABT 1687-)
| | | | +---John Scawen
| | | | +---Trehane Scawen (ABT 1614-)
| | | | | | +---John Trehane
| | | | | +---Elizabeth Trehane
| | | +---Dorothy Scawen (ABT 1653-)
| | | | +---Gregory Arundell (-ABT 1653)
| | | +---Dorothy Arundell
| | | +---Edith Crane (-ABT 1666)
| | +---William Trethewy (ABT 1719-)
| | | +---Elizabeth Retallack
| | +---Henry Trethewy (ABT 1752-ABT 1800)
| | | +---Amy Buckingham
| | +---Robert Trethewy (ABT 1793-22 DEC 1874)
| | | | +---Hugh Hotten (ABT 1654-SEP 1733)
| | | | +---Melchizedek Hotten (ABT 1698-)
| | | | | | +---John Oliver (-AUG 1668)
| | | | | +---Thamason Oliver (ABT 1666-)
| | | | +---Hugh Hotten (-ABT 1787)
| | | | | | +---Richard Polgrain
| | | | | +---Grace Polgrain (ABT 1697-)
| | | | | +---Thomasin ?
| | | +---Grace Hotten (ABT 1756-)
| | | +---Mary Gummow
| +---Mary Philp Trethewy (ABT 1827-1904)
| | +---Cornelius Philp
| +---Mary Philp (ABT 1797-)
| | +---William Moore
| +---Mary Moore (ABT 1774-)
| +---Mary Benny
+---William Thomas Salmon (ABT 1883-NOV 1949)
| | +---Issac William Henry Watson
| +---Hannah Mary Watson (12 FEB 1855-FEB 1927)
| +---Elizabeth Salter
+---Eric Raymond Salmon (18 APR 1911-13 NOV 1989)
| | +---Charles Albert Boyd
| +---Nina May Boyd (ABT 1884-SEP 1964)
| +---Annie Ball
Rory Salmon (ABT 1961-)
+---Teresa ?