For background on how the map was made (and its flaws), see the relevant blog entry.
|Cowan||numerous: Down and Ulster generally, Dublin. Ir. Mac Comhdhain, Ó Comhdhain. From a rare early personal name Comhghan. Also as MacCone. However, Cowan is a common Scottish name (of similar derivation) which may account for many in Ulster.|
|Cowen||Very rare: E Ulster. See Cowan.|
|MacCowan||rare: Antrim, Kerry etc.Ir. Mac Comhdhain. There is a Scottish connection but it is in any case a synonym of Mac Cone, q.v. MIF.|
|Macowan||Very rare: Derry. Ir. Mac Comhdhain. See Mac Cone.|
|Ó Comhdhain||Cowen, Cowan: deir Mac Giolla Iasachta go bhfuil an bun-sloinne imithe i léig ach freagraíonn Cowan do Mac Comhdhain i gCúige Uladh. Litriú nua: Ó Comhain.SI.|