For background on how the map was made (and its flaws), see the relevant blog entry.
|Hennell||Very rare: Dublin. Ir. Ó h-Ionghaile, i.e. as Hennelly, q.v.|
|Hennelly||fairly numerous: Mayo-Galway etc. Ir. Ó h-Ionghaile. Woulfe considers it a variant of Ó Fionnghaile - the initial "F" aspirated in speech. SGG.|
DEDs where Hennelly and a second surname are found together