- Medici, Giulio de'1
- Medici, House of98
- Medici, Lorenzo de', 1449-14922
- Medici, Luisa de'2
- Medici, Niccolo de'4
- Medici, Niccolò de'1
- Medici, Nicolo de'1
- Medici, Ottavia Altoviti1
- Medici, Piero di Lorenzo de', 1472-15031
- Medici, Vincenzo de'12
- Medicine11
- Medicine, Magic, mystic, and spagiric2
- Medicine--Formulae, receipts, prescriptions5
- Medina, Francisco de, 1544-16151
- Meditations1
- Mediterranean Region2
- Mediterranean Sea12
- Mediterranean Sea--Adriatic Sea1
- Mercenary troops1
- Merchants11