| # | Name | Origin | Meaning | Gender | Save |
|---|---|---|---|---|---|
| 1 | Oifa | Celtic | Mythical sister of Ove. | F | |
| 2 | Oilell | Celtic | A mythical queen. | F | |
| 3 | Olwen | Celtic | Mythical daughter of Yspaddaden. | F | |
| 4 | Olwyn | Celtic | Mythical daughter of Yspaddaden. | F | |
| 5 | Oriana | Celtic | Blond. | F | |
| 6 | Ove | Celtic | Mythical daughter of Dearg. | F | |