For background on how the map was made (and its flaws), see the relevant blog entry.
|Doolan||numerous: all areas, but mainly South East. It stands for two Irish names: (1) Ó Dubhlainn (Galway), (2) Ó Dúnlaing, Ó Dubhlaing (Laois), the latter also appears as Dowling. Dúnlang was an early first name. GPN & IF.|