First found in county Cork, where they were seated from very ancient times, some say well before the Norman Conquest and the arrival of Duke William at Hastings in 1066 A.D.

Many Irish Families boarded ships bound for North America in the middle of 19th century to escape the conditions of poverty and racial discrimination at that time. Although these immigrants often arrived in a destitute state, they went on to make important contributions to the emerging nations of the United States and Canada. An inquiry into many immigration and passenger lists has revealed many early immigrants to North America bearing the Cronin family name: Johannes Cronin who settled in Philadelphia in 1738; followed by James Cronin in 1787; Charles, Cornelius, Daniel, Edward, Eugene, James, John, Michael, Patrick, Thomas, William Cronin, all settled in Philadelphia, Pennsylvania between 1817 and 1868.

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