John CORBETT b abt 1814 County Down, Northern Ireland (shipping)
Poss John CORBETT d 1853 Newtown (no age, no parents) [Vic 1889 ECR St Mary's RC Geelong] bur Geelong Eastern Cemetery. (There are two entries for a John Corbett buried in the GEC in 1853 but only one in the death index.)
John CORBETT m bef 1837 Ireland, Sarah b abt 1815 County Down, Ireland (shipping)
Sarah CORBETT died? or remarried? Her maiden surname might be CHALMERS according to the CORBETT one name study website.

Children of John CORBETT and Sarah:

1. John CORBETT b abt 1837 County Down, Ireland (shipping)

2. James CORBETT b 1841 At Sea (shipping)
James CORBET b 1841 Melbourne s/o John CORBET/Sarah [Vic 12695, ECR f270 St James C of E Melbourne]
James Martin CORBETT d 1921 aged 79 yrs Beeac s/o John CORBETT/Sarah unknown [Vic 4035]
James Martin CORBET_ m 1863 Jane McPHERSON [Vic 792] (no issue) (Information from Corbett Windmill website)

3. Agnes CORBETT b 1844 Geelong d/o John CORBETT/Sarah [Vic 7782, ECR f143 Presbyterian Geelong]

4. Andrew CORBETT b 1846 Newtown s/o John CORBETT/Sarah [Vic 21835 ECR f334 Christ Church C of E Geelong]

5. Elizabeth CORBETT b 1850 Newtown d/o John CORBETT/Sarah[Vic 22470 ECR f338 Christ Church C of E Geelong]