Catholic Intelligence

Diocese of Thunder Bay

Sinus Tonitralis

Latin rite diocese in northwestern Ontario, erected in 1952 as the Diocese of Fort William and renamed Thunder Bay in 1970. It is a suffragan of the Archdiocese of Toronto and is led by Bishop Alan Campeau, appointed in January 2025.

The see

Rank
Suffragan diocese
Tradition
Latin Church
Erected
1952
Latin
Sinus Tonitralis
Patron
Saint Patrick
Annuario code
001003219

The see in figures

Catholics
89,000
Population
290,142
Catholic share
30.7%

of the people living within its bounds

Priests
28
Catholics per priest
3,179
Extent
220,000 km²
Catholics per km²
0.4

Figures as recorded in the register, from the Annuario Pontificio and the see's own published statements. Shares and ratios are computed from the two figures shown beside them.

The bishop

Bishop
Alan Campeau
Born
1 August 1959
Birthplace
Belle River

A see whose chair stands empty is recorded as vacant rather than filled with a guess. On what a bishop is, see the bishop.

The cathedral

St. Patrick's Cathedral stands in Thunder Bay, the church that holds the cathedra from which this see takes its name.

On what a cathedral is, see the cathedral; every see church on earth is gathered at the cathedrals.

The province of Toronto

A suffragan of Archdiocese of Toronto.

The sees of this province:

On how the Church is ordered into provinces, see the diocese.

History

In Ontario, Canada, the Diocese of Thunder Bay (Latin: Dioecesis Sinus Tonitralis) serves as a Latin suffragan within the ecclesiastical province of the Metropolitan Archdiocese of Toronto. Its bishop's seat is St. Patrick's Cathedral in Thunder Bay, Ontario, dedicated to St. Patrick.

What is kept by invitation

The record above is published because it is public: what this see is, when it was erected, who holds its chair, and where it stands among its neighbours.

The working record is not. The chancery's address, telephone and email, the clergy of the see, and the hours of Mass, confession and adoration in the parishes within it are kept for members, and a person reads every request.

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Sources

The see's own website · Wikipedia

This record is compiled from the published statements of the see and the references of the Holy See, among them the Annuario Pontificio. On the method, see the keeping of the record. Whoever finds an error is asked, in charity, to write: [email protected].