About Ocallaghan
The surname O'Callaghan is of Irish origin and is derived from the Gaelic name Ó Ceallacháin, meaning "descendant of Ceallachán." Ceallachán is a personal name derived from the Gaelic word "ceallach," which means "bright-headed" or "warlike." The O'Callaghans were an ancient Irish clan that originated in County Cork and were historically associated with the region. Today, the surname is found both in Ireland and among Irish diaspora communities around the world.
The surname Ocallaghan is a unique entry in our records. Discover more about its distribution and characteristics:
Below is the ethnic distribution of the surname Ocallaghan 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 Ocallaghan is not currently available.
Here's how to represent Ocallaghan in Braille, each pattern of raised dots corresponds to a letter in the name.
The image below shows how you can spell Ocallaghan using American Sign Language (ASL). In sign language, each hand shape corresponds to a specific a letter of the name.