Father Guillermo Treviño Jr.’s national profile stemmed from his immigrant rights work with Escucha Mi Voz Iowa (“Hear My Voice Iowa”), a group aiding Latino workers, including immigrants. He is shown here during a meeting earlier this year with U.S. Sen.Chuck Grassley, R-Iowa. / Credit: Photo courtesy of Escucha Mi Voz Iowa
CNA Staff, Nov 5, 2025 / 17:33 pm (CNA).
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 immigrants. Treviño had just returned from Rome, where he represented the group at Pope Leo XIV’s World Meeting of Popular Movements.
He fought deportations, notably for his godson, 18-year-old Pascual Pedro, a West Liberty High School soccer star U.S. Immigration and Customs Enforcement (ICE) deported this summer despite his Deferred Action for Childhood Arrivals (DACA) status.
In a statement issued on the day of his death by the Diocese of Davenport, Bishop Dennis Walsh said: “Father Guillermo’s heart was consistently with those in need. Throughout the current migrant crises, he showed great compassion for the many migrants who find themselves on edge due to aggressive immigration enforcement action.”
As pastor of both St. Joseph churches, Treviño nurtured the meatpacking and farming communities there with “remarkable authenticity,” Walsh said.
“His voice was becoming a beacon of hope and advocacy on this vital issue, gaining national prominence,” Walsh continued in the statement. “He was recently invited to be part of a panel discussion at Georgetown University and had the distinct honor of traveling to the Vatican as part of the World Gathering of Popular Movements. His leadership and commitment to justice will be deeply missed by the Church and the wider community he so faithfully served.”
Archbishop Thomas Zinkula of Dubuque recalled Treviño’s “playful and serious sides,” telling the Des Moines Register this week that “Father Guillermo loved movies, Star Wars, and professional wrestling. But he also was passionate about serving and advocating for immigrants. I was inspired by his total commitment to seeking justice and mercy for people on that particular margin of society.”
Born on March 7, 1986, in San Antonio, Texas, to Maria Luna and Guillermo Treviño Sr., Treviño and his family moved to Moline, Illinois, when he was 3. He earned an associate’s degree from Black Hawk College before entering seminary at Conception Seminary College and Mundelein Seminary. Despite an initial rejection, he said at the time that his faith — rekindled after his father’s early death — drove him forward. Ordained on June 6, 2015, he quickly became a force in rural Hispanic parishes.
According to the diocese’s statement, Treviño “received the National 2022 Cardinal Bernardin New Leadership Award. The award recognizes a ‘young faith-filled Catholic who has demonstrated leadership against poverty and injustice in the United States,’ according to the USCCB [U.S. Conference of Catholic Bishops].”
“It recognizes the leadership, energy, and diverse skills that young people bring to the anti-poverty work of low-income projects and Catholic parishes. It highlights the gifts of young leaders and their Gospel commitment to the poor,” the statement said.
Treviño’s funeral Mass is set for Nov. 7 at Sacred Heart Cathedral in Davenport and will be livestreamed on YouTube. He is survived by his mother, sisters, and extended family.
