The name Carty is likely to have originated from the Irish name Ó Cárthaigh or O'Coraic. It took its current form 'Carty' during later historical events when many Gaelic Irish names were Anglicised. The names Carthy and McCarty may sometimes have derived from the name Carty. Carty is pronounced, whereas Carthy is pronounced. It has been speculated that some Irish immigrants to America and/or their descendants added 'Mc', changing their names to McCarty in the incorrect belief that they were returning the name back to its original form.
