There was a Maurice Conrad Augustine Condon who married Isabel Mabel Burrett at Victoria in 1914. Reg no: 8331 Victoria.
The odd thing is that when you look for this marriage under Maurice's name, it says he married Isabel Mabel Burrett, but when you look for the marriage of a Burrett to Maurice Condon, her name is given as Mabel Isabel Burrett. But they both have the same reg number so it is the same marriage.
Puzzled? That makes two of us!
Anyway, if this is the marriage, and I hope it is, Maurice Conrad Condon died at Malvern Victoria aged 86, and his mother was Augusta Netherwood.
Maurice and Mabel are on the electoral rolls. In 1919, they are at 138 Kororoit Creek Rd, NW. He is a gardener and her name is Mabel Isabel Condon. (There is a Kororoit Road at Williamstown, Victoria)
There are puzzles... If this Maurice is your Morris, then why isn't his middle name Alan? But surely, it would be a billion to one chance against another different Maurice Condon marrying someone named Mabel Isabel Burrett.... ?
P.S. A Mabel Isabel Condon died 24th May 1935 at Carlton, Victoria. She was buried at Williamstown, and her parents were Thos Barrett and Isabel McLennan.