| Name | Úna (also Una, Oona, Oonagh) |
| Pronunciation | OO-nah (two syllables — rhymes with "luna") |
| Gender | Female |
| Meaning | Uncertain — possibly "lamb" (Irish uan); or a fairy queen name of unknown root |
| Gaelic form | Úna |
| Famous bearers | Úna (fairy queen in Irish mythology), Oona Chaplin (actress), Una Healy (singer) |
| Literary connection | Edmund Spenser's Una in The Faerie Queene (1590) |
Úna is pronounced OO-nah — two syllables, rhyming with "luna" or "tuna." The fada on the "ú" indicates a long vowel, giving the first syllable the clear "oo" sound of "moon" or "food." The second syllable is a soft "-nah," and the stress falls on the first syllable throughout.
In Irish, the name is sometimes written Úna with the fada, confirming the long vowel. The anglicised spellings — Una, Oona, and Oonagh — all attempt to capture the same "oo" sound through different spelling conventions. Oonagh (sometimes Oonah) is the form most commonly found in older records and in areas of Ireland with strong oral tradition.
The etymology of Úna is genuinely uncertain — one of those ancient Irish names whose roots predate the documentary record. The most commonly cited derivation links it to the Old Irish word uan, meaning "lamb" — a gentle, pastoral image suggesting innocence and softness. This derivation would make Úna a name with the same symbolic weight as Agnes (from Greek "agnos," lamb) in the international naming tradition.
Other scholars argue that the name is too ancient and too clearly associated with the supernatural world in Irish mythology to have such a simple origin. They suggest it may derive from a pre-Celtic divine name of unknown meaning — a goddess or fairy queen name whose original sense was lost before any writing system could record it.
A third possibility connects Úna to the Latin una, meaning "one" or "united" — but this is considered unlikely by most scholars, as the name appears in Irish tradition well before Latin influence would have been strong enough to generate original Irish names.
In Irish mythology and folk tradition, Úna is associated with the world of the fairy queens — the sí or otherworld beings who inhabit the landscape of Ireland just beyond the visible. An Úna appears in various folk tales as a queen of the fairies, beautiful and powerful, presiding over the otherworld and its relationship with the human world. The name carried associations of unearthly grace and sovereignty.
The most famous literary bearer of the name is the allegorical figure Una in Edmund Spenser's The Faerie Queene (1590) — the great Elizabethan allegorical epic composed largely while Spenser lived in Co. Cork as a planter. Una, whose name means "Truth" or "Unity" in Spenser's allegory, is the virtuous lady accompanied by a lion, representing the True Church. Spenser's familiarity with Ireland and Irish naming tradition is reflected in his choice of this specifically Irish name for his most emblematic figure of virtue.
Úna Bhán (Fair-haired Úna) is one of the most celebrated songs in the Irish language — a tragic love lament in which a young man mourns a girl named Úna who died, some say because her family would not permit their union, others because the man himself delayed too long. The song dates from the seventeenth century and was composed in Co. Roscommon. It remains one of the most sung and recorded songs in the Irish traditional repertoire.
Oona Chaplin — Actress and granddaughter of Charlie Chaplin. Her mother was the Irish-American Oona O'Neill (daughter of playwright Eugene O'Neill), who married Charlie Chaplin in 1943. The actress Oona Chaplin is known for her role in Game of Thrones.
Una Healy — Tipperary-born singer, member of The Saturdays, the British-Irish pop group that had multiple chart hits in the 2000s and 2010s. She has also pursued a solo country music career.
Úna Ní Fhaoláin — Irish historian and writer, author of works on medieval Irish women and on Irish social history. Her scholarship has contributed to greater understanding of women's lives in pre-Norman Ireland.
Una O'Connor — Dublin-born actress (1880–1959) who had a long Hollywood career in the golden age of cinema, often playing comic character roles in films including The Invisible Man (1933) and Bride of Frankenstein (1935).
Úna appears in Irish genealogical records in several forms depending on the period and administrative context. In Catholic parish registers, the Latin form Una or the anglicised Oonagh are most common. In civil registration records from 1864, Una and Oona appear frequently. The Irish form Úna with fada is most common in post-independence records and in Gaeltacht areas.
Úna/Una was occasionally anglicised as Winifred in official records — a completely different name, from Welsh, but used as the English equivalent because of a perceived similarity in sound. If you find a Winifred in an Irish family with a tradition of the name Una or Oona, this substitution may explain the discrepancy.
The name is found across all provinces of Ireland but has particular strength in Connacht, where the oral tradition of Úna Bhán kept it in living use. It remains one of the most distinctive of the genuinely ancient Irish female names — rare enough to be memorable, old enough to carry real depth.
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