Priesthood
Hennen was ordained a priest by Bishop William Franklin for the Diocese of Davenport on July 10, 2004, in Sacred Heart Cathedral. [1] His first assignment in the diocese after completing his licentiate in Rome was as parochial vicar at Prince of Peace parish in Clinton, Iowa from 2005 to 2010. He served as campus minister and parochial vicar at the Newman Center and St. Mary's parish in Iowa City, Iowa from 2010 to 2011. Hennen served as Director of Vocations for the diocese from 2011 to 2018. Within that time frame he served as chaplain and theology teacher at Assumption High School in Davenport from 2014 to 2017. In 2015, he served at Sacred Heart parish in Oxford Junction, Iowa, St. James parish in Toronto, Iowa, Sacred Heart parish in Lost Nation, Iowa and at Saints Philip and James parish in Grand Mound, Iowa. From 2017 to 2021, Hennen served as chaplain and director of campus ministry at his alma mater, St. Ambrose University. During that time he also served as parochial vicar at St. Anthony's parish in Davenport from 2017 to 2018. He became a Diocesan Consultor and the Vicar general of the diocese in 2020. From 2021 to 2025, Hennen served as priest moderator of St. Andrew parish in Blue Grass, Iowa and pastor and rector of Sacred Heart Cathedral in Davenport. [2]
In addition to his pastoral and administrative assignments, Hennen served on a committee established by Bishop Thomas Zinkula that drafted a diocesan policy regarding sexual and gender identity issues. [1] Beginning in January 2023, he wrote the Question Box column for the diocesan paper, The Catholic Messenger. [3]
Bishop of Baker
On July 10, 2025, Pope Leo XIV named Hennen the seventh bishop of the Diocese of Baker. [1] [2] Upon his episcopal ordination, scheduled for September 29, 2025, at St. Francis of Assisi Church in Bend, Oregon, [4] he becomes the youngest bishop to lead a U.S. diocese. [3]
