For background on how the map was made (and its flaws), see the relevant blog entry.
|Jones||Very numerous: all areas, especially Galway. Ir. Mac Seóin. The most numerous name in Wales, it was common amongst settlers from Britain, 16 & 17 cents.|
|Mac Seoin||Jones: líonmhar, i nGaillimh ach go h-áirithe. Inimircigh sa 16 & 17 céad.|