I see it's 11 years since you posted this but ... I believe my grt grandfather married Christina Ann Gollop in 1902. And they had at least one son - the one I can find is Arthur Edmund Harrison B 1903, Waubra, Vic.
Do you know of any other children? Do you know if Christina's daughter B 1901 in Waubra - Frances May - was Arthur Harrison's daughter?
Karyn. whitekaryn at hotmail.com