| Name | Gender | Pronounced | Usage |
|---|---|---|---|
| Detlef | DET-lef (Low German) | Low German, German | |
| Neptune | NEP-toon (English), NEP-tyoon (English), NEP-choon (English) | Roman Mythology (Anglicized) | |
| Serrena | sə-REEN-ə | English (Rare) | |
| Feofilakt | - | Russian | |
| Karolina | kah-raw-LEE-nah (Polish), kah-ro-LEE-nah (Swedish, German) | Polish, Swedish, Norwegian, Danish, Hungarian, Slovene, Croatian, Macedonian, Lithuanian, German | |
| &Aelig;&Eth;Elm&Aelig;R | - | Anglo-Saxon |