CNA Staff, Nov 5, 2025 / 17:33 pm

Father Guillermo Treviño Jr., a 39-year-old priest who advocated for the rights of immigrants in the Diocese of Davenport, Iowa, passed away suddenly on Oct. 31, just hours after returning from a trip to the Vatican.

His death from sepsis after a fatal stomach perforation was a complication of undiagnosed diabetes, according to his sister , Mariela Treviño-Luna, who had traveled with him to Italy.

Due to a shortage of priests in Iowa, Treviño served as a pastor of St. Joseph Church in Columbus Junction as well as St. Joseph Church in West Liberty, southeast of Iowa City.

Treviño’s national profile stemmed from his immigrant rights work as a founder, board president, and chaplain of Escucha Mi Voz Iowa, a group aiding Latino workers, including immig

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