Raghallach as a Baby Name. Meaning and Origin of Raghallach

What is the meaning of the name Raghallach ?

The baby name Raghallach is a Male name , 3 syllables long and is pronounced /ˈrɑɣəlax/ (approx. RAH-uh-lakh).

Raghallach is Irish in Origin.

Raghallach is a masculine Irish given name rooted in Old Irish Rogallach, formed from the intensive prefix ro- plus gal “valor, prowess” and the adjectival -ach, yielding the sense “very valiant” or “most brave.” In later Gaelic orthography the spelling settled as Raghallach, while medieval annals also record Ragallach and Rogallach.

It features early in Irish history, notably borne by Rogallach mac Uatach, a 7th‑century king of Connacht mentioned in the Annals. From this personal name developed the dynastic surname Ó Raghallaigh, anglicized O’Reilly, associated with the lords of Bréifne (modern County Cavan and surrounds). Modern variants and related forms include Ragallach/Rogallach; as a revived given name it is occasionally rendered Reilly or Riley in English, though those are more familiar as surnames. The name carries a strong, martial resonance while remaining deeply tied to Gaelic heritage.

⚙ Raghallach is absent from every birth registry and name dataset we follow. Names like this are usually very rare, tied to a particular region or tradition, or freshly invented. However you look at it, very few people share it.