+---Robert Pollamounter (ABT 1717-)
+---John Pollamounter (ABT 1757-23 JUN 1841)
| +---Catherine Cole 
Robert Pollamounter (ABT 1793-)
| +---James Trethewy (ABT 1517-ABT 1573)
| +---Thomas Trethewy (-ABT 1616)
| +---Bartholomew Trethewy
| +---Bartholomew Trethewy (-1666)
| +---Thomas Trethewey (-ABT 1692)
| +---Bartholomew Trethewy (ABT 1667-MAY 1755)
| +---Walter Trethewy (ABT 1702-NOV 1751)
| | | +---Robert Trethewey (-JUL 1676)
| | | +---Walter Trethewey (-1710)
| | +---Elizabeth Trethewey (ABT 1670-AUG 1743)
| | +---Mary Brewer
| +---Bartholomew Trethewey (ABT 1735-)
| | +---Joan Woon (-1735)
+---Elizabeth Trethewy (ABT 1763-)
+---Sarah Laskey