- Maria Anna Josefa, Queen, consort of John V, King of Portugal, 1683-17541
- Marie de Médicis, Queen, consort of Henry IV, King of France, 1573-16421
- Marina, Saint1
- Marriage (Canon law)--Dispensations1
- Marriage Agreements1
- Marriage law1
- Marriage--Moral and ethical aspects1
- Martial1
- Martini, Luca, 1980-1
- Mary, Blessed Virgin, Saint, in the liturgy1
- Mary, of Bethany, Saint1
- Mass (Music)1
- Mass--Celebration1
- Massacre of the Holy Innocents in art1
- Masses1
- Masses, Unaccompanied1
- Mathematical recreations1
- Mathematics, Greek1
- Mathematics, Medieval1
- Maurice, Saint, -approximately 2871