I Dee-Jay,
Thomas's marriage certificate in Australia doesn't give the provision for "bachelor" being entered. Entry states:
Thomas Paice, Ground Keeper, age 32, Greatwestern, Ararat, Father - William Paice, farmer. Mother - Mary Unknown.
& Mary Ann Harvey, Living with her mother, age 22, Crowlands. Father - Thomas Harvey, mechanic. Mother - Caroline Derry.
Married 30th Sept 1858, Crowlands, Vic.
Witnesses: James Harvey, Lance Hamelet (Hard to read this last name)
The reference on Thomas's death notice "Landed Portland with sheep for the Hentys" (1852) is a bit of a strange one. The Hentys were Agriculturalists and Pasturealists who developed Portland Bay and north and brought sheep from England. The shipping passenger list says Thomas was bound for Port Phillip but appears to have disembarked at Portland on the way.
Greatwestern where Thomas settled was about 150km NW of Portland.
I don't know any more.
Rob