+---John Chapman (05 APR 1800-28 DEC 1871)
| +---Grace Parson 
Jane Chapman (07 JUL 1830-)
| +---John Pollamounter
| +---Robert Pollamounter (ABT 1717-)
| +---John Pollamounter (ABT 1757-23 JUN 1841)
| | +---Catherine Cole
+---Mary Ann Pollamounter (02 MAY 1803-23 FEB 1858)
| +---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