[1] Collini was born in Tunis, Tunisia (then a French protectorate) to a family of European settlers (Pieds-Noirs).
[2] In 1943, while Collini was a student at the Seminary of Tunisia, he joined the French army.
Collini was ordained Bishop on 7 October 1962, at the Saint Louis Cathedral in Carthage, Tunisia.
[4] In December 1996, Collini resigned as archbishop and retired to Notre-Dame de la Paix in Lagardelle-sur-Lèze.
[5] He was buried in the southern vault of the choir at the Saint-Étienne cathedral of Toulouse.