John O'Callaghan (?–1913) was National Secretary of the United Irish League and a staff writer on The Boston Globe.
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Join the roomJohn O'Callaghan (?–1913) was National Secretary of the United Irish League and a staff writer on The Boston Globe.
John O'Callaghan (?–1913) was National Secretary of the United Irish League and a staff writer on The Boston Globe.
Not who you're looking for? Others named John O'Callaghan: Irish disc jockey, musician and record producer · American singer-songwriter and musician · United States Army Medal of Honor recipient
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