Quay
Quay—This name is the anglicised form of MacKay in the Isle of Man. The name is more common than its other form Kay. It is written M'Quay in Ulster and in Galloway; in Gaelic Mac Aoidh. See Kay.
Alphabetical Index of Anglicised Surnames in Ireland
See also Woulfe’s Irish Names and Surnames
… and O'Hart's Irish Pedigrees