- Manuscripts, Catalan1
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- Marriage law1
- Marshals1
- Marucelli, Benedetto1
- Marucelli, Francesco, 1625-17031
- Mayenne, Charles de Lorraine, Duc de, 1554-16111
- Medina Sidonia, Alonso Pérez de Guzmán, duque de, 1550-16191
- Medina Sidonia, Juan Alonso de Guzmán, Duque de, -15581
- Medina, Francisco de, 1544-16151
- Meditations1
- Mediterranean Sea1
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- Monasteries1
- Monasterio de Santa María (Vallbona de las Monjas, Spain)1
- Monasterio de Villaverde de Sandoval1
- Monastic and religious life1
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