+---Edward Jenkin (ABT 1800-)
| | +---Andrew Elvans
| | +---John Elvans (ABT 1706-)
| | | +---Susanna Harris 
| | +---John Elvans (ABT 1746-MAY 1830)
| | | | +---William Lewarne
| | | +---Elizabeth Lewarne (ABT 1716-)
| +---Elizabeth Elvans (ABT 1773-)
| | +---William Perkin (-1688)
| | +---John Parkin
| | | +---Mary ?
| | +---William Parkin (ABT 1690-)
| | +---William Parkin (ABT 1719-1784)
| | | | +---Richard Morlyn (-ABT 1730)
| | | +---Anne Morlyn (ABT 1695-)
| | | | +---Nicholas Trethewy (-ABT 1680)
| | | +---Julyan Trethewy (ABT 1652-)
| | | | +---Bartholomew James (-ABT AUG 1636)
| | | | | +---Sicelie ? (-1608)
| | | +---Petronell James (-ABT 1692)
| | | +---Joan ?
| +---Mary Parkin (ABT 1748-23 APR 1830)
| | +---Richard Osborne (-JUN 1667)
| | | +---Eme Varcoe
| | +---Richard Osborne
| | | +---Joan ?
| | +---Richard Osborne (-NOV 1707)
| | | | +---Arthur Michell (-ABT 1657)
| | | +---Constance Michell (ABT 1635-APR 1717)
| | | | +---Thomas Corne (-1647)
| | | +---Blanche Corne
| | +---Benjamin Osborne (ABT 1687-NOV 1738)
| | | +---Bettres ?
| +---Elizabeth Osborne (ABT 1721-)
| | +---Thomas Tregenza
| | +---Thomas Tregenza (ABT 1633-)
| | | +---Julian ? (-30 APR 1665)
| | +---Nicholas Tregenza (ABT 1655-APR 1734)
| | | +---Mary ?
| +---Ann Tregenza (ABT 1687-)
James Jenkin (ABT 1826-)
| +---Benjamin Truscott (ABT 1660-)
| +---Alexander Truscott (ABT 1681-1759)
| +---Lewis Truscott (ABT 1707-AUG 1780)
| | +---Phillippa Croull (ABT 1670-JUN 1743)
| +---Alexander Truscott (ABT 1742-03 FEB 1827)
| | | +---John Harris (BEF 1686-)
| | +---Ann Harris (ABT 1713-)
| | +---Jane Paul (BEF 1686-)
| +---Alexander Truscott
| | +---Mary Cowling
+---Mary Ann Truscott (ABT 1805-)
+---Mary Williams