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| Flanagan | Very numerous: all areas but especially S E Leinster, Connacht, S Ulster. The Irish is Ó Flannagáin, Flann, a popular personal name meaning "blood-red". A sept of Roscommon related to the O'Connors; another of Fermanagh. There were also groups in Offaly and Waterford. IF & SGG. |
| Ó Flannagáin | Flanagan: an-líonmhar: gach aird: go speisialta in oir-dheisceart Laighean, Connachta agus deisceart Uladh. Clann tábhachtach i gConnachta, gaolmhar leis na Conchúraigh. Bhí clanna eile i bhFear Manach agus Uíbh Fhailí. Brí: ón ainm pearsanta Flann, a bhí an-choitinn sa mheán-aois. MIF & SGG. |
| O'Flanagan | Quite numerous: Dublin etc. Ir. Ó Flannagáin, dimin. of first name Flann (ruddy). A sept of Roscommon whose chief was steward to the kings of Connacht. See Flanagan. |
Parishes where Flannegan and a second surname are both baptised.
This list shows total Flannegan Roman Catholic baptisms by county.
Click on the county to see detail.