For background on how the map was made (and its flaws), see the relevant blog entry.
|Warren||numerous: E Ulster, South East, Cork etc. Ir. Bharain generally but Ó Murnáin in S W Munster. Derivation of English name may be de la Varenne (French place-name).|
|Wearen||fairly rare: Dublin. Variant of Waring, q.v.|
DEDs where Warren and a second surname are found together