John & Agnes' children were:

William born Petrockstowe 1835, died Doncaster 1910, no children.

John born Petrockstowe 1837, died in a mining accident at Hoddles Creek 1894, no children.

Mary Anne born Petrockstowe 1839, married William Mitchell.

Richard born Petrockstowe 1842, married Mary Ann Carnegie.

Joseph born Petrockstowe 1844, married Lucy Steede Crossman.

Frederick born Petrockstowe 1846, married Mary Jones.

Elizabeth born Petrockstowe 1848, died Melbourne 1853, no children.

Eliza born Petrockstowe 1850, married Tom Petty.

Catherine Elizabeth born Collingwood 1853, married Robert Edwin Wilson.  She died in 1932, no children.