(-BEF 1851)
+---James Jacka (14 APR 1823-)
| | +---Stephen Sincock
| +---Elizabeth Sincock 
(ABT 1795-)
| +---Hannah Secombe
Thomas Jacka (ABT 1858-MAR 1860)
| +---William Kitto (ABT 1615-)
| +---Thomas Kitto (ABT 1655-1724)
| | | +---Stephen Polkinghorne (ABT 1588-NOV 1670)
| | +---Elinor Polkinghorne (ABT 1619-)
| | +---Elizabeth Warne
| +---Thomas Kitto (ABT 1688-)
| | +---Mary James
| +---John Kitto (ABT 1724-MAR 1788)
| | +---Thomasine Carter (-JUL 1774)
| +---Richard Kitto (ABT 1762-DEC 1820)
| | +---Ann Mitchell (ABT 1720-JAN 1808)
| +---Richard Kitto (ABT 1791-01 DEC 1833)
| | +---Jennifred Jane Williams (ABT 1765-03 SEP 1833)
+---Mary Ann Kitto (ABT 1826-MAR 1864)
+---Mary Cornish (ABT 1803-SEP 1870)