Costigan households mapped in 1901

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Costigan	fairly numerous: S Leinster,Tipperary etc. Ir. Mac Oistigín. Though a branch of the FitzPatricks, Mac Giolla Phádraig, the name derives from Hodgkin, a dimin. of Roger. In the spoken language it is now Mac Costagáin. MIF.
Mac Costagáin	Costigan: líonmhar: Laighin theas, Tiobraid Árann & rl. Claochló sa teanga labhartha ar Mac Oistigín, clann a bhí suite i Laois riomh treascairt na 17 aoise. Bhain siad le Mac Giolla Padraig in Osraí. Préamh: ón ainm Béarla Hodgkin, díspeagadh ar Roger. Ach ba chlann Ghaelach iad mar sin féin, de réir de Bhulbh.

DEDs where Costigan and a second surname are found together

This list shows total 1901 Costigan households by county.
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Costigan heads of household in the 1901 census