Encyclopedias, Almanacs, Transcripts, and Maps
- Rodríguez, Alfonso
- Rodríguez, Alphonsus, St.
- Rodzinsky, Artur
- Roe, Alban (Bartholomew), St.
- Roedelheim
- Roederer, Count Pierre Louis°
- Roehricht, Reinhold°
- Roemer, Theodore
- Roessler, Carl
- Roest, Meijer Marcus
- Rogachev
- Rogatin
- Roger Bacon
- Roger de Pont l'Évêque
- Roger le Fort, Bl.
- Roger Marston
- Roger of Élan, Bl.
- Roger of Notingham
- Roger of Salisbury
- Roger of Sicily