For background on how the map was made (and its flaws), see the relevant blog entry.
| Simpson | Very numerous: Mainly Ulster, also Waterford, Offaly etc. Ir. Mac Shim. The name may be English or Scottish. It was found in Ulster in 17 cent. |
DEDs where Simpson and a second surname are found together
This list shows total 1901 Simpson households by county.
Click on the county to see detail.
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