For background on how the map was made (and its flaws), see the relevant blog entry.
|Coen||numerous: Galway etc. Ir. Ó Cadhain. Sometimes for Cowan in Down, it is generally a synonym for Coyne, q.v.|
|Cohen||Quite numerous: Dublin, Belfast. As well as a synonym of Coen, this is a well-known Jewish name and some these Cohens are no doubt of Jewish lineage.|
DEDs where Cohen and a second surname are found together