Dewar
Dewar—Dewar is the anglicised form of McIndeor (Mac An Deoir). The McIndeors were for generations the keepers of the Bachal or Staff of St. Finan. McIndewer is another form. The name is numerous in the counties of Perth and Stirling.
Alphabetical Index of Anglicised Surnames in Ireland
See also Woulfe’s Irish Names and Surnames
… and O'Hart's Irish Pedigrees