1 December (18 November O.S.):
- AMANDUS AND ANSELM, abbots of Lérins. Amandus reposed in 708 and Anselm circa 750.
- CONSTANT, a priest-hermit at Lough Erne in Ireland who, in 777, died in circumstances which led to his veneration as a martyr.
- KEVERNE, a friend of St. Kieran or Piran (5th March) in Cornwall.
- MAWES (MAUDETUS, MAUDEZ), a sixth century hermit near Falmouth in Cornwall, where a village is named after him. He later went to Brittany where he is known as St. Maudez, where many churches are dedicated to him.
- MAXIMUS OF MAINZ, the nineteenth Bishop of Mainz from 354 until his repose in 378. He suffered great persecution under the Arians.
- MUMMOLUS (MUMBOLUS, MOMLEOLUS, MOMBLE), an Irishman who was a companion of St. Fursey (16th January), whom he succeeded as Abbot of Lagny and reposed circa 690.
- NAZARIUS, a monk and Abbot of Lérins who reposed circa 450.
- ORICULUS AND COMPANIONS, martyrs under the Arian Vandals near Carthage circa 430.
* - Prior to the Schism the Patriarchate of Rome was Orthodox and fully in communion with the Orthodox Church. As Saint John of Shanghai and San Francisco +1966 said "The West was Orthodox for a thousand years, and her venerable Liturgy is far older than any of her heresies."