+---William Curtis (20 NOV 1798-20 DEC 1866)
| +---Mary Ray 
William Curtis (05 NOV 1829-02 SEP 1850)
| +---William Kitto (ABT 1615-)
| +---Thomas Kitto (ABT 1655-1724)
| | | +---Stephen Polkinghorne (ABT 1588-NOV 1670)
| | +---Elinor Polkinghorne (ABT 1619-)
| | +---Elizabeth Warne
| +---William Kitto (25 FEB 1684-APR 1732)
| | +---Mary James
| +---Thomas Kitto (ABT 1719-)
| | +---Joan Pearce (ABT 1690-)
| +---James Kitto (ABT 1753-29 JAN 1814)
| | | +---William Polglase
| | +---Eleanor Polglase (ABT 1723-)
| | +---Anne James
+---Ann (Nancy) Kitto (ABT 1799-04 MAY 1868)
| +---Ralph Sampson
+---Alice Sampson (ABT 1763-29 OCT 1843)
+---Jane Richards