Rev. Alban Butler (171173). Volume II: February. The Lives of the Saints. 1866.
St. Tresain, or Tresanus, Priest and Confessor
HE was a holy Irish priest, who having left his own country, preached with great zeal in France, and died curate of Mareuil upon the Marne, in the sixth century. His relics are held in great veneration at Avenay in Champagne. See his life in Colgan and Bollandus.