| Radbertus Corbeiensis fere 785 - 859 |
| Radbodus Traiectensis fere 850 - 917 |
| Radulfus Cadomensis † 1130 |
| Radulfus Phisicus saec. XII ex. |
| Radulfus Tortarius † post 1122 |
| Rainaldus Vizeliacensis saec. XII in. |
| Rangerius Lucensis † 1112 |
| Ratherius Veronensis fere 890 - 974 |
| Raymundus de Rocosello saec. XIII |
| Reginaldus Cantabrigensis † 1109 |
| Reimbaldus Leodiensis saec. XII in. |
| Reinerus Leodiensis saec. XII in. |
| rhythmi antiquiores saec. VI - IX |
| rhythmi cod. Parisini 242 saec. X |
| Ricardus saec. XII - XIII |
| Ricardus de Venosa saec. XIII in. |
| Robertus Partes saec. XII me. |
| Romulus Nilantii saec. XII - XIII |
| rudium doctrina saec. XIII in. |
| Ruodlieb 1050 |
| Rupertus Tuitiensis fere 1070 - 1130 |
| Ryccardus de sancto Germano fere 1165 - 1244 |
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