For background on how the map was made (and its flaws), see the relevant blog entry.
|Degnan||rare: Antrim. See Deignan.|
|Deighnan||fairly rare: Connacht, Belfast area (Deignan). Ir. Ó Duibhgeannáin (dark head). See Duignan which relates to Roscommon. SGA gives Ó Duígeannáin as the modern version.|
|Dignam||fairly numerous: Dublin etc. See Duigenan.|
|Dignan||rare: scattered. See Duigenan.|
|Duignan||fairly numerous: Midlands, E Connacht. Ir. Ó Duibhgeannáin. Derivation possibly similar to Duffin. They were a noted literary family of Roscommon. SGG.|
|Ó Duibhgeannáin||Duignan (-m): cuíosach líonmhar: Lár na Tíre & oirthear Chonnacht. Clann liteartha i Ros Comáin & Liatroim a b'ea iad. Brí: dubh + ceann. MIF & SGG.|
DEDs where Dugnan and a second surname are found together