Oengus as a Baby Name. Meaning and Origin of Oengus

What is the meaning of the name Oengus ?

The baby name Oengus is a Male name , 2 syllables long and is pronounced ENG-us,AN-gus (Angus, Anglicized),AYN-gus (Aonghus, Gaelic).

Oengus is Gaelic, Irish in Origin.

Oengus is the Old Irish form of a Gaelic name better known today as Aengus or Angus. It derives from óen “one” + gus “vigor, strength,” yielding the sense “one strength” or “unique vigor.” The learned spelling Oengus reflects early medieval orthography found in annals and glosses; Irish later prefers Óengus/Aengus, while Scottish Gaelic has Aonghus/Aonghas. Cognates across Gaelic preserve the same core meaning, with Gus a common English nickname.

The name is steeped in Irish and Scottish tradition. In mythology, Aengus Óg (“young Aengus”), son of the Dagda and Boann, embodies love, youth, and poetic inspiration. In the historical record, figures include the 8th–9th‑century saint Óengus the Culdee (author of the Félire Óengusso) and Pictish kings Óengus I and II, whose prominence helped seed the Scottish region-name Angus. Today Oengus/Aengus remains familiar in Ireland, with Angus most widespread in Scotland and English usage.

⚙ Oengus doesn't appear in any of the birth registries or name datasets we track. That's typically a sign of a rare name, a regional or traditional one, or a modern coinage. Either way, it's a name very few children share.