(1700-)
+---John Penberthy (22 JUN 1723-)
Isaac Penberthy (ABT 1753-1820)
| +---Samuel May
+---Margaret May 
(24 OCT 1725-)
(1700-)
+---John Penberthy (22 JUN 1723-)
Isaac Penberthy (ABT 1753-1820)
| +---Samuel May
+---Margaret May (24 OCT 1725-)