For background on how the map was made (and its flaws), see the relevant blog entry.
|Roden||fairly rare: Derry, Belfast, Dublin etc. Ir. Ó Rodáin, rod, strong. An English origin is also possible. SI.|
|Rudden||Quite numerous: Cavan etc. Ó Rodáin, rod, strong. See Roden and Rodden.|
DEDs where Rodden and a second surname are found together