While Toronto is wonderful (born and bred here), I've always had a visit to Australia on my bucket list.
Found the marriage on Ancestry:
Name: Mary Ane Larke Date of Registration: 1873 Registration district: Mountmellick Volume: 3 Page: 525 (click to see others on page) FHL Film Number: 101252
When you click on the link for the page, you get a list of the others appearing on the page, and Joseph Hosford is one of them. You will still have to order the record from the GRO in order to find out the names of their fathers (mothers are generally not named in the civil records).
Mountmellick is in Kings County where we found the oldest child also born in 1873.