Rev. Alban Butler (171173). Volume III: March. The Lives of the Saints. 1866.
St. Regulus, or Rieul
ST. REGULUS, who having converted the country of Senlis to the faith, about the same time that St. Dionysius preached in France, was made first bishop of Senlis, and died in peace in the midst of his flock. See the Bollandists and Tillem. t. 4. p. 719.