- 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
- Mexico--Culhuacán1
- Missions1
- Missions, Portuguese1
- Monasteries1
- Monasterio de Villaverde de Sandoval1
- Monastic and religious life1
- Monasticism and religious orders1
- Monasticism and religious orders--Rules1
- Montserrat (Abbey)1
- Morocco1
- Mysticism1
- Nahuatl language1
- Naples (Kingdom)1
- Natural history1
- Navarra, Pedro de1
- Netherlands--Amsterdam1