| Oxa | Derived from a sharp blade. |
| Peada | Name of a prince |
| Penda | A name meaning loved or beloved. |
| Pendragon | From the dragon's enclosed land. |
| Penrith | Head of the ford in Welsh |
| Pleoh | A name meaning a joyful, happy soul. |
| Prasutagus | One who is born of the earth. |
| Raedan | A name meaning advisor or guide. |
| Raedbora | An old term for a counselor. |
| Raedwald | A ruler who gives wise advice. |
| Rand | One who shields others; Tree of good scent; Variants of Randolph Wolf's shield. Surname.; Wolf shield. Variant of Randolph |
| Randi | "Variant of Randall. Shield, wolf." |
| Rawlins | Son of the famous wolf. |
| Recene | A name meaning a fresh or new beginning. |
| Renweard | Guardian of the house |
| Rheda | A name meaning a chariot. |
| Rheged | An ancient kingdom of old. |
| Rice | Derived from a fiery passion. |
| Richlynn | "Powerful ruler, cascade of wealth." |
| Rinan | A bright and joyful melody. |
| Rinc | A sharp and clever thinker. |
| Rodor | A famous and noble warrior. |
| Roe | A small deer or roebuck. |
| Row | A person living by a hedgerow. |
| Roweson | Son of the redhaired one. |
| Rowson | Son of the famous red one. |
| Ruadson | Son of the redhaired one. |
| Ryce | An enthusiastic and fiery one. |
| Rypan | A name meaning a noble warrior. |
| Sar | A leader or a chief person. |
| Sarlic | A name meaning a noble or free man. |
| Scand | One who is from Scandinavia. |
| Scead | An Old English word meaning a shadow. |
| Sceadu | An Old English word meaning a shadow. |
| Sceotend | An Old English term for a warrior. |
| Scowyrhta | An old word for boat builder. |
| Scrydan | To clothe or dress someone. |
| Scur | A sudden shower or storm. |
| Seamere | Dweller by the sea boundary |
| Seaver | Fierce stronghold |