Name Meaning for "Lynch"
Irish: reduced Anglicized form of Gaelic Ó Loingsigh ‘descendant of Loingseach’, a personal name meaning ‘mariner’ (from long ‘ship’). This is now a common surname in Ireland but of different local origins, for example chieftain families in counties Antrim and Tipperary, while in Ulster and Connacht there were families called Ó Loingseacháin
who later shortened their name to Ó Loingsigh and also Anglicized it as Lynch.