When Dionysius was mortally wounded by soldiers of the usurper Domitian, he sent Sanctinus and a certain Antoninus to Athens to inform the Athenians of his martyrdom.

[1] As bishop of Verdun, in 332 he built the first Christian oratory on Mont Saint Vanne on the site of a pagan temple and consecrated it to the holy apostles Saint-Pierre-et-Saint-Paul.

When Sanctinus was forced to join his persecuted community in Meaux, the first bishop of Verdun entrusted the episcopate to Saint Maurus (fr: Maur), the first Verdunois ordained priest.

Thus, there is a story that around 1044 starving citizens of Meaux sold the relics of Sanctinus to itinerant merchants of Verdun.

This explains the veneration of Sanctinus both in Meaux, where he is held a martyr, and at Verdun, where he is considered a bishop and confessor.

A votive feast has long been celebrated on September 22 at Auteuil-le-Roi in the department of Yvelines in the region of Île-de-France, in honor of Sanctinus, who preached there.