- Branciforte family1
- Breviary (Catholic Church)1
- Bridget, of Sweden, Saint, approximately 1303-13731
- Broadsides1
- Buffoni, Baldello1
- Burlaeus, Gualterus, 1275-1345?1
- Calendar1
- Canon law--Commentaries1
- Capponi family1
- Capponi, Bernardo1
- Capponi, Cappone1
- Cappucci, Arrigo di1
- Categoriae (Aristotle)1
- Categories (Philosophy)1
- Catholic Church. Archdiocese of Reims (France)1
- Catholic Church. Diocese of Salisbury (England)1
- Ceccoli, Baldo1
- Ceccoli, Bartolo1
- Certano, Daina di1
- Charles VI, King of France, 1368-14221