ROME (WLS) -- On Thursday, some of the Chicago Catholic school students who traveled to Italy to meet Pope Leo XIV served Mass alongside Cardinal Blase Cupich.

Thursday night's special Mass was held at the Basilica di San Bartolomeo all'Isola Tiberina, or the Church of St. Bartholomew on the Island in Rome.

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It's Cupich's titular church, or the church assigned to him as a cardinal.

A titular church symbolizes a cardinal's connection to the pope and the Church of Rome.

It's a tradition that dates back to the early days of the Catholic Church.

St. Bartholomew was founded in the 10th century by the holy Roman emperor.

It's located on the Tiber River.

Thursday's Mass was held for the American Federation of Labor and Congress of

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