The name could be of a few different origins, it could be a Gaelic name, Úna, derived from the Gaelic word, uan (lamb).
It could be a derivative of the Old Norse verb, una, meaning “to enjoy.”
It could also be from the Latin meaning, “one.”
As of 2010, its Finnish form of Oona was the 15th most popular female name, while Una ranked in as the 92nd most popular female name, (2009).
Other forms of the name include:
- Oona (English/Finnish)
- Oonagh (Engliah)
- Úna (Irish)
- Ùna (Scottish)