- Liturgics1
- Ludovico Sforza, Duke of Milan, 1452-15081
- Malatesta family1
- Malatesta, Sigismondo Pandolfo, signore di Rimini, 1417-14681
- Manuscripts, Catalan1
- Manuscripts, French1
- Marginalia1
- Mariano, Fra1
- Marie de Médicis, Queen, consort of Henry IV, King of France, 1573-16421
- Marriage (Canon law)1
- Marriage (Canon law)--Dispensations1
- Marshals1
- Mary, Blessed Virgin, Saint1
- Mary, Queen of Scots, 1542-15871
- Massachusetts--Wellesley1
- Materia medica1
- Mayenne, Charles de Lorraine, Duc de, 1554-16111
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Medici, Elisabetta de'1
- Medici, Giuliano de', 1453-14781