About Oreilly
The surname O'Reilly is of Irish origin and is derived from the Gaelic name Ó Raghallaigh, meaning "descendant of Raghallach." The name Raghallach itself is believed to come from the word "ragh," meaning "race" or "racecourse," and "gal," meaning "valor" or "bravery." The O'Reilly clan was historically prominent in County Cavan, Ireland, and the name is now widely found both in Ireland and among Irish diaspora communities.
The surname Oreilly is a unique entry in our records. Discover more about its distribution and characteristics:
Below is the ethnic distribution of the surname Oreilly based on recent US Census records. This is a brief glimpse into the diverse backgrounds of people carrying this surname.
Ranking information for the surname Oreilly is not currently available.
Here's how to represent Oreilly in Braille, each pattern of raised dots corresponds to a letter in the name.
The image below shows how you can spell Oreilly using American Sign Language (ASL). In sign language, each hand shape corresponds to a specific a letter of the name.