Author
- Richard II of England1
- Richard Ward1
- Ro. Ba1
- Robert Fabyan1
- Robert Reade1
- Robert de Saint-Martin1
- Rodolfo Pio da Carpi1
- Roman Catholic Archdiocese of Mainz1
- Roman Catholic Diocese of Osma-Soria1
- Roman Catholic Diocese of Regensburg1
- Roman Catholic Diocese of Zaragoza1
- Roman Curia1
- Royal Chancellery of Granada1
- Rudulphus Bollartus1
- Sacro Regio Consiglio1
- Salomon Trismosin1
- Sangalletti family1
- Santa Maria degli Alberighi1
- Santa Maria in Portico a Fontegiusta1
- Scipione Bargagli1