At this period, there not many priests around. The Carleton (Tracadièche) priest was for a time the only one to service the north and South shores of baie des Chaleurs, from Percé to Caraquet.
Ste-Anne was the parish of Restigouche in the Bonaventure County, QC. St-Joseph is the parish of Carleton in Bonaventure County, QC. Dalhousie is in the Restigouche County, NB.
Go on Google map and learn about the location of these places.
I think the Meagher/Maher were moving where there was work.