(ABT 1796-)
+---Matthew Masters (ABT 1828-)
| +---Mary ? 
(ABT 1801-)
Thomas Henry Masters (ABT 1855-)
| +---John Snell (ABT 1726-)
| +---John Snell (ABT 1752-)
| | | +---James Trethewy
| | | +---Richard Trethewy (ABT 1665-JAN 1741)
| | | +---James Trethewy (ABT 1703-)
| | | | +---Ann Martyn (ABT 1666-JUN 1738)
| | +---Phillippa Trethewy (ABT 1727-)
| | | +---Anthony Jane
| | +---Loveday Jane (ABT 1707-1777)
| | +---Elizabeth Syndercombe
| +---Thomas Snell (ABT 1787-DEC 1873)
| | | +---John Best (ABT 1648-AFT 1696)
| | | +---John Best (ABT 1683-)
| | | | +---Grace John
| | | +---Abraham Best (ABT 1717-11 MAR 1772)
| | | | | +---Robert Phillips
| | | | +---Mary Phillips (17 SEP 1683-01 DEC 1799)
| | | | +---Joan Sampson
| | +---Temperance Best (ABT 1758-)
| | | +---Joseph Stephens
| | +---Temperance Stephens (ABT 1726-DEC 1809)
| | +---Jane Stick
+---Selina Snell (ABT 1833-)
| +---Thomas Snell
+---Grace Snell (ABT 1790-SEP 1875)
| +---John Best (ABT 1648-AFT 1696)
| +---John Best (ABT 1683-)
| | +---Grace John
| +---Abraham Best (ABT 1717-11 MAR 1772)
| | | +---Robert Phillips
| | +---Mary Phillips (17 SEP 1683-01 DEC 1799)
| | +---Joan Sampson
+---Ann Best (ABT 1764-)
| +---Joseph Stephens
+---Temperance Stephens (ABT 1726-DEC 1809)
+---Jane Stick