Author
- Ahmad ibn Hanbal1
- Al-Bayhaqi1
- Al-Dhahabi1
- Al-Quda'i1
- Al-Qurtubi1
- Al-Tamimi, the physician1
- Alain of Lille1
- Albericus de Rosate1
- Albertanus of Brescia1
- Albertus de Saxonia1
- Alcuin1
- Alexander Bonini1
- Alexander of Villedieu1
- Alfred of Sareshel1
- Andrea Goussen1
- Anselm of Canterbury1
- Antoine Rolet1
- Antonio dei Pigolati1
- Arnaldus de Villa Nova1
- Arrigucci family1