McBride family of 1870's

I am researching my paternal grandmother and her parents and initially joined the County Cavan volunteers. There was no information to be found their. A 90 year old 1st cousin of mine remembers his mother saying her parents came from Enniskillen. I have no other to confirm that but here are the few details I have: 

My grandmother: Nora Mary McBride

Born: 1873-1876 according to various documents I have read

My great Grandfather: Bernard (Barney) Mc Bride, born in 1850 in Ireland, died in Butte, Montana, USA in 1909

My great Grandmother: Nancy (Annie) Cassidy, born in 1858 in Ireland, died in Butte, Montana, USA in1931

I also have names of several other children supposedly born in Ireland.

I do not know when they immigrated to the USA but Nora married my grandfather, from Sligo, in 1895 in Laramie, Wyoming, USA

Thank You for any information you may be able to find.

James Haran