Hi Susan,

Once you have the marriage certificate, below, then you will be able to advance your search.

https://online.justice.vic.gov.au/bdm/index-search?action=ge...

Australia Marriage Index, 1788-1950

Name: Donald Forbes
Spouse Name: Rachel Wood
Marriage Place: Victoria
Registration Place: Victoria
Registration Year: 1884
Registration number: 4547

"Full Marriage Certificate:
This certificate is recognised as legal proof of marriage and the couple's details. You can use this certificate for official purposes such as changing your driver licence, passport or bank account details to your married name.

$ 29.20"

The witnesses might be his brother and/or sister, and also his mothers name should be stated. Once we know his mothers name, then if she died in Australia, we will be able to find her death, and maybe a death notice in the paper, which lists names of the children.

Mary