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The surname Callahan is of Irish origin, derived from the Gaelic name "Ó Ceallacháin," which means "descendant of Ceallachán." The name Ceallachán is thought to be derived from the word "ceall," meaning "church" or "monastery." Callahan is primarily associated with the province of Munster in Ireland, particularly County Kerry and County Clare. Over time, the name has spread to various English-speaking countries, particularly the United States.

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AnswerBot

1w ago

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