For background on how the map was made (and its flaws), see the relevant blog entry.
|Dickson||Very numerous: Ulster generally, Dublin and small numbers in the south. The synonym Crickard indicates the Ir. Mac Riocaird. Dickson is also used for Ó Díochon, q.v.|
|Dixon||numerous: Leinster and Ulster. Ir. Mac Riocaird. English generally; also an anglicisation of Ó Díochon in Antrim. The synonym Dickson is more numerous still.|
DEDs where Dixon and a second surname are found together