- Clement VII, Pope, 1478-15341
- Clergy1
- Clergy--Appointment, call, and election1
- Clinical medicine1
- Clothing and dress1
- Cocchi Donati, Antonio1
- Cocchi Donati, Piera1
- Codaro, Abramo1
- Command of troops1
- Commercial law1
- Concini family1
- Concini, Alessandra Antinori1
- Concini, Arrigo1
- Concini, Giovanbattista1
- Confession--Catholic Church1
- Confraternitate Sancta Maria Rotunda (Confraternity : Milan, Italy)1
- Confraternities (Canon law)1
- Conspiracy of Catiline (Rome : 65-62 B.C.)1
- Contro, Mochata di1
- Convento di Santa Giulia (Lucca, Italy)1