Ó Sionnaigh
Ó SIONNAIGH—I—O Sheny, O Sunny, Shunny, Shinagh, Shinnick, Shinnock, Shinwick, Fox; 'descendant of Sionnach' (fox); probably not distinct from Ó Sionaigh, which see; the name of a family of Corca Laoighdhe in South-West Cork; also of a Sligo family; now often translated Fox.
Alphabetical Index to Irish Surnames