Aengus is an Irish name with deep roots in mythology and history. It is the older form of Aonghus, a name borne by gods, kings, and saints. The name derives from Old Irish Óengus, meaning from óen "one" and guss "force, strength", thus "one strength" or "true vigour". Etymology In Old Irish, the name was Óengus or Oíngus, attested in Adomnán's Life of St Columba as Oinogus(s)ius. This is believed to reflect a Proto-Celtic origin meaning "true vigour". The medieval Dindsenchas (a collection of place-name lore) etymologized the name as "one desire", referencing the myth that Boann, wife of the Dagda, gave him this name because her desire for the Dagda was her one desire. In Middle Irish the name evolved to Áengus, and in Modern Irish to Aonghus [ˈeːnˠəsˠ]. Mythological Significance In Irish mythology, Aengus (or Óengus Óc, "Aengus the young") is one of the Tuatha Dé Danann, a supernatural race. He is often considered a god of youth, love, summer, and poetic inspiration. He is the son of the Dagda (the chief god) and Boann (the goddess of the River Boyne). Aengus is also known as Mac an Óc ("son of the young one") and corresponds to the mythological figure Mabon in Welsh tradition and the Celtic god Maponos. He plays a central role in several early Irish myths, including the story by which he claims his dwelling, Brú na Bóinne (Newgrange), from his father. Historical Bearers Beyond myth, the name was borne by historical figures, including an 8th-century Pictish king, several Irish kings, and saints such as a 9th-century bishop of Tallaght. The name's continued use in Scotland as Angus and in Gaelic as Aonghas shows its resilience. Key Facts Meaning: "one strength" or "true vigour" Origin: Old Irish (Óengus) Type: Mythological and given name (male) Usage regions: Ireland, Scotland (via Angus and Aonghas) Related forms: Óengus, Aonghus, Angus, Gus, Innes