For background on how the map was made (and its flaws), see the relevant blog entry.
|Glendon||Quite numerous: Kilkenny-Tipperary, Cork. Ir. Mac Giolla Fhiondáin (devotee of St Fintan). MacAlinden etc. in Ulster. However, MacLysaght thinks Glendon may be of English origin. Woulfe gives Mac Giolla Fhindéin (devotee of St Finnian).|
DEDs where Glendon and a second surname are found together