Bishop John Clayton Nienstedt is the son of John and Elizabeth Nienstedt of Harrison Township and the second oldest in a family of six children. Bishop Nienstedt was ordained to the priesthood on July 27, 1974, at Sacred Heart Church, Dearborn, Mich., following studies at Sacred Heart Major Seminary, Detroit, and the Pontifical Gregorian University, Rome.
Bishop Nienstedt holds a bachelor of arts from Sacred Heart Major Seminary, a bachelor of sacred theology from the Pontifical Gregorian University; and a licentiate and doctorate in Sacred Theology from the Pontifical Institute of Saint Alphonsus, Rome. His doctoral topic was “Human Life in a Test-tube; the Moral Dimension of In Vitro Fertilization and Embryo Transfer.”
On June 12, 1996, Bishop Nienstedt was named an Auxiliary Bishop of the Archdiocese of Detroit by Pope John Paul II. He was ordained a Bishop on July 9, 1996, by Cardinal Adam Maida, Archbishop of Detroit. On June 12, 2001, Pope John Paul II named Bishop Nienstedt the Third Bishop of the Diocese of New Ulm. On April 24, 2007, Pope Benedict XVI named Bishop Nienstedt the Coadjutor Archbishop of the Archdiocese of Saint Paul and Minneapolis.