For background on how the map was made (and its flaws), see the relevant blog entry.
|Morran||Very rare: scattered. See Morrin.|
|Morrin||fairly numerous: Midlands etc.Ir. Ó Murcháin, Ó Muirín, corresponding to septs in Offaly and Mayo. See also Morahan and Murrin. MacLysaght mentions a Huguenot connection in Ulster, but the name is rare there now.|