| Ceolwald | Battle-famous ruler |
| Chaad | Warrior; Battle |
| Chanlan | A name meaning a path or a channel. |
| Charlies | A diminutive form of Charles the free. |
| Chrisopher | Ruler of the people |
| Chroferus | Ruler of the people |
| Cinguali | People of the Cingual tribe, a Celtic name referring to a specific group |
| Cinnor | Fair-haired, a Celtic name meaning having light hair |
| Cintugnatus | Conqueror of the Tuatha Dé Danann, a title given to a Celtic leader |
| Claudin | Derived from Latin, meaning 'lame' or 'crippled' |
| Clevan | A variant of the name Cleve. |
| Clyton | Clay Settlement |
| Coilbrit | Old English name, possibly meaning 'battle Briton' or 'warrior of Britain' |
| Aetla | A noble and graceful woman. |
| Aidrix | Wise ruler, wise leader |
| Corbalengi | Spear, sharp point |
| Cornellis | Derived from Cornelius, meaning 'horn' or 'young male' |
| Cucola | Derived from Cuckoo, meaning 'bird' or 'song' |
| Cuda | Derived from Cuda, meaning 'fish' or 'sea creature' |
| Cuddey | Son of the bright one |
| Cuddie | Son of the bright one |
| Cufna | Battle, or warrior |
| Cunopectus | Born of the people, people's protector |
| Cunuaret | Strong, powerful, and noble |
| Curra | One who is a spear carrier |
| Cuthwulf | A famous and powerful wolf warrior. |
| Cynebehrt | A name meaning bright and royal. |
| Cyrtla | One who wears a tunic. |
| Davenja | Combination of Gaelic and Latin, meaning 'noble and victorious' |
| Aislie | From the Ash-tree Meadow |
| Alchred | Old English name meaning 'elf counsel' or 'elf wisdom' |
| Aldfrid | Old English name meaning 'old peace' or 'old tranquility' |
| Didimus | Latin name meaning 'we have given' |
| Diuaret | Derived from Latin, meaning 'to give life' or 'to revive.' |
| Duduc | Possibly derived from the Old English 'dud,' meaning foolish or silly. |
| Dumngual | Possibly derived from the Old English 'dun,' meaning hill or mound. |
| Dunnere | Possibly derived from the Old English 'dun,' meaning hill or mound. |
| Dydda | Possibly derived from the Old Welsh 'dydd,' meaning day or sun. |
| Eadstan | Old English name, meaning 'stone' or 'rock' |
| Ealda | An old and wise individual. |