+---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 +---Humphrey Betty Trethewey (ABT 1731-JUL 1769) | +---Joan Woon (-1735) +---Thomas Trethewey (ABT 1758-25 FEB 1812) | | +---Richard Hendra | +---Blanche Hendra (ABT 1734-JAN 1775) | +---Jane Murton +---Humphrey Beattie Trethewey (ABT 1801-24 MAY 1864) | +---Elizabeth Carvolth +---Thomas Trethewey (23 DEC 1829-17 DEC 1899) | +---Elizabeth Pearse (ABT 1802-) Elizabeth Anne Trethewey (ABT 1862-) +---Elizabeth Catherine Trethewey (ABT 1830-) | +---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 | +---Humphrey Betty Trethewey (ABT 1731-JUL 1769) | | +---Joan Woon (-1735) | +---Thomas Trethewey (ABT 1758-25 FEB 1812) | | | +---Richard Hendra | | +---Blanche Hendra (ABT 1734-JAN 1775) | | +---Jane Murton +---Catherine Carvolth Trethewey (ABT 1805-06 JUN 1876) +---Elizabeth Carvolth