Sidronius

Saint Sidronius was a Roman martyr of the third century, killed around 270 in the persecution of the emperor Aurelian. His life is confused with that of another saint of the same name, venerated at Sens in France. An English martyrology notes that his relics were taken in the Middle Ages to Flanders.

The village of Saint-⁠Cydroine, in the commune of Laroche-⁠Saint-⁠Cydroine near Sens in Yonne, bears his name; it is said that he was martyred here, and a spring with miraculous power was a place of pilgrimage in the Middle Ages. The Saint Cydroine Church, of the eleventh or twelfth century, is dedicated to him. In 1062 Adela, wife of Baldwin the Pious, count of Flanders, moved the saint's bones from Rome to Messines in Flanders; his Acts, composed about that time, are full of untruths, and Sens also claimed to possess his relics. He is commemorated on 11 July (and 8 September), as a saint of the West before the Great Schism (a saint of the undivided Church), by the New Calendar.