- Robert, King of Naples, approximately 1275-13431
- Roman Civil War (Rome : 43-31 B.C.)1
- Roman law1
- Romances, Latin (Medieval and modern)1
- Romanesque1
- Romera, Carlo1
- Rondinelli, Vieri de'1
- Rossi, Girolamo de'1
- Rucellai, Donato1
- Rucellai, Guglielmo de'1
- Rules1
- Russia leather bindings1
- SS. Annunziata (Church : Florence, Italy)1
- SS. Trinità e S. Michele Arcangelo di Brondolo (Monastery)1
- Sabbathaians1
- Saint-Bertin (Monastery : Saint-Omer, Pas-de-Calais, France)1
- Saints1
- Salignato, Lunghino di1
- Salt--Taxation1
- Salviati, Antonio, 1816-18901