Delannoy was born on 2 April 1957 in
Comines, in the
Department of
Nord, the son of Jacques Delannoy, the owner of a lumber yard, and Anne-Marie Carissimo. He attended the Institute Saint-Jude in
Armentières and the
Lycée Saint Paul. He earned a master's degree in
economics at the
Catholic University of Lille. He then worked as an
accountant for four years. Delannoy then entered the Seminary of Lille to prepare for the
priesthood. He was ordained a priest for the Diocese of Lille by Bishop
Gérard Defois on 4 June 1989. For twelve years Delannoy served in a parish in
Roubaix, one of the poorest cities in France. Beginning in 1991 he took on other roles. He was responsible for diocesan activities in independent sites from 1991 to 1999. In 1997 was also named
dean of the urban district of Roubaix and of
Bailleul. In 1999 he was appointed
episcopal vicar of
French Flanders, and in 2003 was given additional responsibility as dean of
Houtland. Delannoy was appointed an
auxiliary bishop of Lille and
titular bishop of
Usinaza by
Pope John Paul II on 30 June 2004. He received his episcopal consecration on 12 September He was installed there on 10 May. a year after Archbishop
Luc Revel had been forced to submit his resignation after a Vatican investigation of his management of the Archdiocese. Delannoy was installed there on 21 April. In the
Bishops' Conference of France, Delannoy serves as president of the Episcopal Commissions on Finances and on Economic, Social and Legal Affairs. He was vice president of the CEF from 2013 to 2019. ==See also==