(-BEF 1841)
+---Samuel Hocking (ABT 1813-)
| | +---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 ?
| | +---Samuel Parkin (ABT 1755-FEB 1834)
| | | | +---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-)
| +---Mary Parkin (ABT 1790-)
| | +---Richard Crowle (11 DEC 1697-)
| | +---Richard Crowle (ABT 1730-)
| | | | +---John Luny
| | | +---Grace Luny (ABT 1699-)
| | | +---Grace ?
| +---Ann Crowle (ABT 1757-)
| +---Elizabeth Garland
Frances Hocking
| +---James Trethewy
| +---Richard Trethewy (ABT 1665-JAN 1741)
| +---John Trethewey (ABT 1690-)
| | +---Ann Martyn (ABT 1666-JUN 1738)
| +---Joseph Trethewy (ABT 1735-DEC 1816)
| | | +---Phillip Mellow (ABT 1660-JAN 1711)
| | +---Temperance Mellow (ABT 1690-MAY 1765)
| | +---Jane ?
| +---Jonas Trethewey (ABT 1769-)
| | | +---John Rickard
| | | +---Jonas Rickard (ABT 1705-)
| | +---Caroline Rickard (ABT 1734-)
| | +---Honour ?
+---Caroline Trethewey (ABT 1813-)
| +---James Trethewy
| +---Richard Trethewy (ABT 1665-JAN 1741)
| +---John Trethewey (ABT 1690-)
| | +---Ann Martyn (ABT 1666-JUN 1738)
| +---John Trethewey (ABT 1720-)
| | | +---Phillip Mellow (ABT 1660-JAN 1711)
| | +---Temperance Mellow (ABT 1690-MAY 1765)
| | +---Jane ?
| +---John Trethewy (ABT 1751-)
| | | +---Joseph Grose
| | +---Jane Grose (ABT 1724-)
| | +---Jane ?
+---Ann Trethewy (ABT 1776-)
| +---James Trethewy
| +---Richard Trethewy (ABT 1665-JAN 1741)
| +---William Trethewy (ABT 1694-)
| | +---Ann Martyn (ABT 1666-JUN 1738)
| +---James Trethewy (ABT 1719-)
| | +---Jenefer Sweet (-SEP 1733)
+---Ann Trethewy (ABT 1742-1782)
+---Grace Warne