QUINN SURNAME HISTORY
by Willie O'Kane
Quinn Coats of Arms
Descended from the same branch as O'Hagan, Quinn (and its variant Quin) is actually the most common Tyrone name. It comes from the Gaelic O'Coinne, from Coinne, a grandson of Fergus, son of Niall of the Nine Hostages. As traditional quartermasters to O'Neill, Quinns were responsible for arms and provisions in both war and peace.
The original name has also been anglicised as Conney, Cunnea and Quinney, while in the last century there were related versions - probably attributable to non standard spelling - such as Queen and Quenn in Armagh and Whin and Whinn in Down.
This is from Irish Roots Magazine