Calahan is a Celtic name, whose meaning is 'one who loves churches'. It could also be a derivative of the Gaelic Irish name 'Callahan', which means 'a small person who is argumentative'.
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Calahan is a Celtic name, whose meaning is 'one who loves churches'. It could also be a derivative of the Gaelic Irish name 'Callahan', which means 'a small person who is argumentative'.