(ABT 1517-ABT 1573)
+---Richard Trethewy (BEF 1550-)
+---Hugh Trethewy (-1633)
| | +---William Hawkins
| +---Joan Hawkins 
(ABT 1530-)
Anthony Trethewy
+---Christine ?
(ABT 1517-ABT 1573)
+---Richard Trethewy (BEF 1550-)
+---Hugh Trethewy (-1633)
| | +---William Hawkins
| +---Joan Hawkins (ABT 1530-)
Anthony Trethewy
+---Christine ?