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​He was ordained a priest of the Diocese of Austin in 1986.  He was ordained and installed as Bishop of San Angelo on January 27, 2014, on the feast of St. Angela Merici. 

He considers his most precious treasure to be his personal relationship with Jesus Christ.

"For God so loved the world that He gave His one and only son, that whoever believes in Him shall not perish but have eternal life." John 3:16

Michael J. Sis is the sixth Bishop of the Roman Catholic Diocese of San Angelo. He oversees the Catholic Church in 29 counties in West Texas, covering an area of 37,000 square miles.


Bishop Sis grew up in Bryan, Texas. He is the son of Raymond and Janice Sis.  He is the fourth of five children. He has seven nieces and nephews and five great-nieces and nephews.

He graduated from Bryan High School in 1978. He earned an undergraduate degree in Philosophy in 1982 from the University of Notre Dame in South Bend, Indiana. 

He studied Theology at the North American College in Rome, receiving graduate degrees from the Gregorian University in 1985 and the Lateran University in 1990.