Ethel May Harris 
(1885-)
| +---William Salmon
| +---John Salmon (ABT 1821-05 OCT 1907)
+---Mary Salmon (ABT 1862-1891)
| +---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