Parishes where Jackson and a second surname are found together
Household numbers by county in Griffith's (1847-64), as on the map
Click on a county to see more detail
|Jackson ||Very numerous: all areas, especially E Ulster. English, 17 cent. Ir. Mac Siacais, SGA.|
|Mac Siacais ||Very rare: Limerick etc. Ir.Lang. See Jackson.|
Variants in Griffith's
& total households
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Non-Griffith's Variants Click here
for all variant sources.
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