Mac Fhinghin
Mac FHINGHIN—IV—M'Kynine, M'Kennyne, Kenning, Kennyon, Kenyon, Kennon, Keenan, &c.; 'son of Finghin' (fair-offspring), a rare surname. Its anglicised forms cannot easily be distinguished from those of Mac Coinín, which see. See also Mag Fhinghin.
Alphabetical Index to Irish Surnames