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Surname Etymology and Meaning of MORRISSEY
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Name meanings and etymologies are often disputed. The information here is compiled from freely available sources, and no claims whatsoever are made for accuracy, either historical or etymological.
Irish: Americanized form of Ó Muirgheasa ‘descendant of Muirgheas’, a personal name apparently derived from muir ‘sea’ + geas ‘taboo’, ‘prohibition’. However, according to MacLysaght, this surname is also derived from the Norman name de Marisco.
Source: Dictionary of American Family Names (2003)
