| Bronislav | | brah-nee-SLAHF (Russian) | Czech, Slovak, Russian, Medieval Slavic | |
| Cateline | | - | Medieval French | |
| Chedomir | | - | Macedonian, Medieval Slavic | |
| Chestibor | | - | Medieval Slavic | |
| Chestirad | | - | Medieval Slavic (Hypothetical) | |
| Chestislav | | - | Medieval Slavic | |
| Col | | - | Medieval English | |
| Dalibor | | - | Czech, Slovak, Croatian, Serbian, Slovene, Medieval Slavic | |
| Daw | | - | Medieval English | |
| Desislav | | - | Bulgarian, Medieval Slavic | |
| Desislava | | - | Bulgarian, Medieval Slavic | |
| Dicun | | - | Medieval English | |
| Didacus | | - | Medieval Spanish | |
| Dionisia | | - | Medieval English | |
| Diot | | - | Medieval English | |