Bishop-Designate Brendan J. Cahill to Be Installed as Seventh Bishop of the Diocese of Joliet

JOLIET, Ill. — Bishop-Designate Brendan J. Cahill will be installed as the seventh bishop of the Diocese of Joliet at 2 pm on Wednesday, Nov. 11, 2026, at the Cathedral of St. Raymond Nonnatus in Joliet.

Cardinal Blase J. Cupich, archbishop of Chicago, and Archbishop Gabriele Caccia, apostolic nuncio to the United States, will participate in the Mass. Bishops, priests, deacons, religious and faithful from throughout the diocese and beyond are also expected to attend.

The Mass will mark the beginning of Bishop-Designate Cahill’s ministry as bishop of the Diocese of Joliet. The diocese serves approximately 500,000 Catholics in DuPage, Ford, Grundy, Iroquois, Kankakee, Kendall, and Will counties.

Seating at the cathedral is limited, and attendance will be by invitation-only. Invited guests are asked to RSVP by Oct. 28.

The Mass will be livestreamed on the Diocese of Joliet’s YouTube channel for those unable to attend in person.

Bishop-Designate Cahill succeeds Archbishop Ronald A. Hicks, who was appointed archbishop of New York. Bishop Dennis E. Spies has served as the apostolic administrator of the Diocese of Joliet since February 2026.

Media Information
Media members seeking to cover the Mass must RSVP and request credentials by November 4. Please contact Ed Duffy, Chief Communications Officer, at [email protected].