Loughlin
The surname Loughlin has several origins. In some cases it a form of the surname McLaughlin (derived from the Irish Mac Lochlainn). In other cases, Loughlin is a form of O'Loughlin (derived from the Irish Ó Lachtnáin).
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Wikipedia
The surname Loughlin has several origins. In some cases it a form of the surname McLaughlin (derived from the Irish Mac Lochlainn). In other cases, Loughlin is a form of O'Loughlin (derived from the Irish Ó Lachtnáin).