St. Audoen's Church

St. Audoen's is the only medieval parish church, retaining any original features, still in use within the city of Dublin. Situated on the north side of High Street, the principal street of medieval Dublin, the church is dedicated to St. Audoen or, in the French version, Ouen, the 7th-century bishop of Rouen and patron saint of Normandy.

from the "St. Audoen's Church Visitors' Guide"