+---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
Mary Pelmounter (23 MAY 1825-)
+---Mary Thomas