Monica
This is a long shot as have only discovered your query on William Gill which you posted in 2012 but can give you this information -
I have discovered William Gill is my Great Grandfather. He married my Great grandmother in Queenstown Tasmania in 1899 and my grandmother Susan Gladys was born in 1920. I have found a marriage certificate between them 8th June 1899. My GGM name was Susan Florence Hamburger and she was a widow of 26.
Hope this helps
cheers Julie Atkinson