| Ahlfrith | Ruler of peace, peaceful ruler |
| Aidaan | Mystery; Superior; Beloved One |
| Aidrix | Wise ruler, wise leader |
| Ailbric | Bright fame, famous and bright |
| Ailbriht | Bright fame, famous and bright |
| Ailef | Elf, mythical being |
| Ailmar | Ruler of the sea, sea ruler |
| Ailmund | Protector of the people, people's guardian |
| Ailred | A wise and noble counselor |
| Ailuin | Beautiful, lovely |
| Ailwin | Friend of the people, people's friend |
| Ailwinus | Friend of the people, people's friend |
| Aimbison | Strong protector, strong guardian |
| Aircol | Ruler of the air, air ruler |
| Conthigirni | Great lord, great ruler |
| Conuan | Little dog, small dog |
| Conuetu | Gathering, assembly |
| Conuoge | Gathering, assembly |
| Coppa | Derived from a cup or vessel |
| Corbaleng | Spear, sharp point |
| Corbalengi | Spear, sharp point |
| Corbalengus | Spear, sharp point |
| Cornellis | Derived from Cornelius, meaning 'horn' or 'young male' |
| Correa | One who lives near a brook |
| Cors | Short form of names starting with 'Cor', meaning 'crow' or 'raven' |
| Cortel | Derived from Cortell, meaning 'short' or 'little' |
| Cossa | Derived from Cosma, meaning 'order' or 'harmony' |
| Cradelmas | Derived from Christmas, meaning 'festival of the birth of Christ' |
| Craeda | Derived from Crad, meaning 'love' or 'charity' |
| Craige | Dweller near a rocky crag |
| Crashaiou | Derived from Christ, meaning 'anointed one' |
| Crebba | Derived from Crebb, meaning 'ruler' or 'leader' |
| Credan | Derived from Creed, meaning 'faith' or 'belief' |
| Creoda | A name meaning to increase |
| Criddi | Derived from Cridd, meaning 'wise' or 'intelligent' |
| Croc | Derived from Crocus, meaning 'saffron' or 'yellow' |
| Crowford | Derived from Crow, meaning 'raven' or 'wise' |
| Crownwell | Derived from Crown, meaning 'royal' or 'regal' |
| Cryda | Derived from Cry, meaning 'weep' or 'lament' |
| Crympel | Derived from Crimp, meaning 'curl' or 'twist' |