| Armagh: | 1 | Cavan: | 1 | Donegal: | 2 | Dublin: | 3 |
| Dublin city: | 1 | Fermanagh: | 56 | Galway: | 2 | Leitrim: | 3 |
| Offaly: | 1 | Tipperary: | 1 | Westmeath: | 4 |
| Dundas | Quite numerous: Fermanagh etc. Scottish. Woulfe reports Ir. Ó Nása in the spoken language in W Galway. In Scotland, it is an ancient and notable family. SS. |
Parishes where Dundas and a second surname are found together
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Click on a name to see it on the map.
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