Have you considered sending a request to the NLA to look up the parish registers? I have posted the live links to the Anglican ones already. I am familiar with Anglicans, but a google search shows that Dean is not exclusively Anglican...
https://www.catholicculture.org/culture/library/dictionary/index.cfm?id=32961 Re Grace WILSON, Glebe death 1870 (#1742, parents as Alexander and Mary) … I think we maybe should consider to set her aside at the moment … I think Henry WILSON is among the favourite names for that era in NSW ….
NSW ER 1870 THE GLEBE
Henry WILSON, Mitchell St, Glebe, household.
Sands 1867, 1869 Sydney Alpha Directory
Henry WILSON, butcher, Mitchell St, Glebe.
Sands 1873
Henry WILSON, butcher, Harden St Glebe.
Sands 1877
Henry P WILSON, butcher, Horden St, Glebe
NSW ER 1878 THE GLEBE
NONE named Henry WILSON listed for that electorate.
Grevilles PO Directory 1875
Henry WILSON, storekeeper, MOONBI.
Samsons Directory 1867
Liverpool Plains
H WILSON, Moonby.
JM (I may have duplicated some info, but here it is in the one post. )