Denis Jachiet was born in Paris on 21 April 1962. He served as vicar of the parish of
Notre-Dame-de-Grace de Passy and chaplain of the college and high school of
Saint-Jean de Passy from 1997 to 2000; formator of the Seminary of Paris and teacher at the cathedral school from 2000 to 2014; head of the Maison Saint-Roch of the Seminary of Paris from 2000 to 2010; delegate for priestly and religious vocations from 2002 to 2009; member of the Priests Council from 2005 to 2016; director of the Maison Saint-Augustin at the Seminary of Paris from 2009 to 2010; parish priest of
Saint-Séverin and Saint-Nicolas and head of the Maison Saint-Séverin of the Seminary of Paris from 2010 to 2014; diocesan chaplain of the
Scouts unitaires de France for 2013/2014; and vicar general and titular canon of the Cathedral of Paris from 2014 to 2016. He received his episcopal ordination on 9 September. He was installed there on 14 November. He served as apostolic administrator of the Diocese of Saint-Dié from September 2022 to February 2023. ==References==