Parishes where Doulan and a second surname are found together
|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.|
|Doolin||Quite numerous: Dublin. See Doolan.|
|Dooling||rare: Midlands. See Doolan.|
|Dowling||numerous: E Leinster & general. Ir. Ó Dúnlaing, one of the "seven septs of Laois". See also Doolan. Dúnlang was an early first name in Leinster. IF & SGG.|
|O'Dowling||rare: Cork. Ir. Ó Dúnlaing. One of the "Seven Septs of Laois". As Dowling they are well represented in E Leinster and generally. IF.|
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