Oonagh is an ancient Irish female given name, derived from the Old Irish 'Uanchu'. It means "lamb", symbolizing gentleness and grace. This name has a rich history in Irish literature and folklore, notably appearing as the wife of King Ailill in the Ulster Cycle of mythology. Today, it remains a unique and rare choice for parents seeking an unusual yet meaningful name for their daughter.
"Oonagh saw a peak in popularity between 2015 and 2020, with at least six births each year during this period. However, it has not been among the top choices for parents in recent years, as indicated by the lower birth numbers in 2021 and 2022."