Mountcastle Family History
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Mountcastle Name Meaning
Irish: in part at least, probably a further Anglicization of the Irish surname Mountcashell, itself an Anglicized form of Gaelic Ó Maolchaisil (see Cashel 2), which was associated with Ballymulcashell in County Clare. Woulfe says that a registrar in Munster changed the name to Mountcashel c. 1840. English: in England, this name is common in Lincolnshire. While this may well be the result of migration from Ireland, the possibility of a habitational name from an unidentified place should not be ruled out.
Source: Dictionary of American Family Names ©2013, Oxford University Press
Similar surnames: Tuttle, Hardcastle, Montague, Mountain, Montante, Doncaster, Outwater