Stone
Stone—This name in West Mayo and in West Galway is the anglicised form of Clogherty (O'Clochartaigh), and of O'Maolchluiche in Sligo, North Mayo. North Leitrim and North Roscommon.
Alphabetical Index of Anglicised Surnames in Ireland
See also Woulfe’s Irish Names and Surnames
… and O'Hart's Irish Pedigrees