1 Irish: reduced Anglicized form of Gaelic Ó Finn ‘descendant of Fionn ’, a byname meaning ‘white’ or ‘fairhaired’. This name is borne by several families in the west of Ireland.2 English: from the Old Norse personal name Finnr ‘Finn’, used both as a byname and as a short form of various compound names with this first element.3 German: ethnic name for someone from Finland.