+---Thomas Jacka (ABT 1760-NOV 1833)
| +---Elizabeth Gilbert 
+---James Jacka (ABT 1806-06 DEC 1881)
| +---Anna Moyses (ABT 1768-06 MAR 1857)
Eliza Jacka (ABT 1836-)
| +---Ishmael Lobb
| +---Ishmael Lobb (ABT 1750-MAY 1817)
| | +---Ann Rodda
| +---John Lobb (01 JAN 1785-BEF 1861)
| | +---Mary Symons
+---Mary Lobb (ABT 1812-12 JUL 1893)
+---Phillippa ? (ABT 1788-)