Kewis
Kewis—This name in the Isle of Man is the anglicised form of Mac Uais, meaning the "Noble's Son." Hence Colla Uais, or Colla the Noble, the 121st King of Ireland and the ancestor of numerous Scottish clans.
Alphabetical Index of Anglicised Surnames in Ireland
See also Woulfe’s Irish Names and Surnames
… and O'Hart's Irish Pedigrees