- Margarita, de Austria, Queen, consort of Philip III, King of Spain, 1584-16111
- Marginalia2
- Maria Anna Josefa, Queen, consort of John V, King of Portugal, 1683-17541
- Marital property1
- Marriage4
- Marriage (Canon law)2
- Marriage (Canon law)--Dispensations1
- Marriage (Roman law)1
- Marriage customs and rites1
- Marshals1
- Martino, Odino S., active 15th century1
- Martinus, Polonus, -12791
- Martyrologies4
- Martyrs4
- Mary Magdalene, Saint1
- Mary, Blessed Virgin, Saint12
- Mary, Blessed Virgin, Saint, in the liturgy--Orthodox Eastern Church1
- Mary, Queen of Scots, 1542-15872
- Mary, of Bethany, Saint1
- Mashāriq al-anwār (Ṣaghānī, al-Ḥasan ibn Muḥammad)1