|Adrain||mod.nos: E Antrim. Ir. Ó Dreáin. Originally in Roscommon, they moved to Ulster. See also Drain(e).|
|Drain||Quite numerous: Belfast etc. Ir Ó Dreáin. An Ulster name also occurring as Adrain but it originated in Roscommon where they were erenaghs near Boyle 13 cent.MIF.|
|Ó Dreáin||Adrain, Drain: cuíosach líonmhar: Aontroim. Clann airchinneach i Ros Comáin sa 13 céad. Bhogadar as san go Cúige Uladh. MIF & SGG.|
Parishes where Adrain and a second surname are found together
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