Óengus
Óengus is a given name of Old Irish origin. It is composed of the elements "óen" meaning "one" or "unique" and "gus" meaning "strength" or "vigor". The name is most famously associated with Óengus mac Óengusa, also known as Óengus the Great, a prominent king of Munster in the 8th century and later a High King of Ireland. He is also known for his piety and for founding the monastery of Tallaght.
The name has been borne by several other notable figures in Irish history and literature. In mythology,
In modern times, the name Óengus remains in use in Ireland and among people of Irish descent.