- Aleramo, Marquis of Monferrato, -9671
- Alessandri, Alessandro degli1
- Alessandri, Bartolomeo degli2
- Alessandri, Niccolò degli1
- Alessandri, Piero degli9
- Alessandri, Pietro degli2
- Alessandro, Pietro di1
- Alexander Balas, King of Syria, -145 B.C.1
- Alexander III, Pope, -11812
- Alexander VII, Pope, 1599-16671
- Alexander, de Villa Dei. Doctrinale puerorum1
- Alexander, the Great, 356 B.C.-323 B.C--In literature2
- Alexander, the Great, 356 B.C.-323 B.C--Romances3
- Alexander, the Great, 356 B.C.-323 B.C.10
- Alexius, Saint1
- Alfonso I King of Asturias, 693-7561
- Alfonso II, King of Naples, 1448-14951
- Alfonso III, King of Asturias and Leon, approximately 848-approximately 9101
- Alfonso V, King of Aragon, 1396-14581
- Alfonso V, King of Asturias and León, 994-1027 or 10281