Fr. Delonnay, 67, was born in Grosse Pointe and attended Sacred Heart Seminary in Detroit and St. John’s Provincial Seminary in Plymouth Township.
He was ordained Feb. 8, 1975, at St. Michael Church in Monroe, where he celebrated his first Mass.
Fr. Delonnay served as associate pastor at St. Malachy Parish, Sterling Heights (1975-78), St. Raymond Parish, Detroit (1978-81), and St. Hugo of the Hills Parish, Bloomfield Hills (1981-86). He served as auditor of the Metropolitan Tribunal from 1981-82.
He was pastor of St. Christopher Parish, Detroit (1986-88), before serving on the faculty of Sacred Heart Major Seminary and as director of priestly vocations for the archdiocese from 1988-91. Fr. Delonnay served as pastor of St. Linus Parish, Dearborn Heights (1991-94), and was appointed pastor of Our Lady of the Lakes Parish, Waterford (1994,- 2017) .
Fr. Delonnay retired to North Branch, Michigan, and is currently serving as senior pastor for the cluster parish in July 2017, at SS. Peter & Paul, St. Mary's of Burnside, Sacred Heart in Brown City, and St. Patrick's Chapel in Clifford.
Fr. Delonnay has served as chaplain to the Boy Scouts, and on the archdiocesan Presbyteral Council (1995-97, 2013-15). He earned the John Farrell Award in 1999 and was clergy chairman of the Catholic Services Appeal in 1997.