- Agamemnon, King of Mycenae (Mythological character)1
- Agazaria, Claudio Boncompagni di1
- Agreda, Dominici d'1
- Agriculture1
- Albertus de Fontanella1
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- Alexander, the Great, 356 B.C.-323 B.C.1
- Alfonso V, King of Aragon, 1396-14581
- Alliata family1
- Almanach perpetuum celestium motuum (Zacuto, Abraham ben Samuel)1
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