Baring-Gould’s sources: Roman, Belgian Martyrologies, Also in the dioceses of Utrecht, Deventer and Groningen on this day. But at Roermund on May 10th together with his companions Plechelm and Otger. Authority: — A life written/ before the middle of the 14th cent.; but how much earlier is uncertain.] S. Wiro was an Irishman by birth, who, with two companions, Plechelm and Otger, by their names apparently of Saxon race, like so many of his countrymen, was filled with a desire to wander. He visited Rome, where he and Plechelm were ordained bishops, and then returned to Ireland. But again he left his native land, and this time came into Guelders, and having sought the court of Pepin of Herstal, mayor of the Palace, the father of Charles Martel, was given by him the Hill of S. Peter, afterwards called the Odilieberg, near Roermund, where he built a cell, and there died. His body was translated to Roermund in 1341. S. Wiro belonged to an ancient Irish family, settled at Corcobaskin, S. Peter of Tarentaise.

…ii 7 in the county of Clare, from which sprung S. Senan of Inniscathy. The Bollandists [Jesuit scholars who since the 1600s have critically studied the lives of the saints], Dempster, and other writers are wrong in numbering him among the Scottish saints. The writer of his life says he came from Scotia, but Scotia means the north part of Ireland, and in another place he speaks of the island from which Wiro came. Moreover, we find him mentioned in various old Irish documents and Kalendars.