Angeline Curran - born Johnstown, Pennsylvania 1833

I am searching for information about my GGGrandmother, Angeline Curran. She was born in Johnstown, Pennsylvania in 1833 and died in Fremont Nebraska in 1901. She was married to Capt. Thomas Davis Black in 1854. According to census records, both of her parents were born in Ireland. I have not been able to determine names for either one. I've researched the census records for Johnstown from 1820 thru 1860. The only Curran I can find who has a female child of the correct approximate age is named John Curran. It's possible he has a brother named Hugh Curran, since the two men are on the same census page, which should indicate they live close to each other.

After Angeline married, they lived in Conemaugh, PA. The 1860 census records show that a James Curran, age 40, and Matilda Curran, age 17, also lived with them. I have been able to determine if these are her siblings, or cousins or other relatives.

Any help in tracing her family back before her birth is greatly appreciated.