Saint Werenfried (or Werenfrid, Werenfridus; died c. 780) was an English Benedictine monk, priest and missionary among the Frisians.

[6] The hagiographer Alban Butler ( 1710–1773) wrote in his Lives of the Fathers, Martyrs, and Other Principal Saints, under November 7, St Werenfrid, Priest and Confessor.He was an English monk, and, according to Mabillon, accompanied, or, as the Bollandists rather think, followed Saint Willibrord into Friseland, and assisted him in preaching the gospel.

Saint Werenfrid planted the faith in the isle or territory of Betawe, or Batavia, in Holland, lying between the Rhine, the Leck, the Maes, and Merve, especially at Elste, a town in that territory, where he was buried.

His tomb was famous for pilgrimages, and the miraculous cures of sick persons, especially those afflicted with the gout.

Baldericus, the fifteenth bishop of Utrecht, founded there a collegiate church in his honour, with eight canonries.

[7] John O'Hanlon (1821–1905) in his Lives of the Irish saints wrote, St. Werenfrid, Priest and Confessor, Missionary in Frisia.

For greater improvement in the science of the saints, he forsook country and friends, to dedicate himself wholly to the service of his fellow creatures.

He is said to have been one of those twelve apostolic men belonging to the English nation, who were destined for a missionary career.

These were destined to carry the word of life to the Frisons, Saxons, and other pagans in Germany.

The writer of his Acts assures us, that it was impossible to express how rich he was in all good work, and how careful he had been in administering comfort to the afflicted.

He is likewise entered in the anonymous Calendar of national saints, at the 14th of August, as published in O'Sullevan Beare's work.