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Monahan meaning and name origin
Monahan \m(o)-na-han\ as a boy's name is of Irish and Gaelic origin, and the meaning of Monahan is "monk".
Similar baby names are Mandan, Menahem, Montane, Montana, Munchin and Shanahan.
Popularity of Monahan
Monahan is not a popular first name for men but a very popular surname or last name for all people (#2411 out of 88799). (1990 U.S. Census)
Displayed below is the baby names popularity of the name Monahan for boys. (2010 statistics) Compare Monahan with similar and related boy baby names.