James Stacpole & Mary Nash,marr.1836,Waterford,Ire

My gg grandmother, Alicia Stacpole's parents were Mary Nash and James Stacpole. I know that Mary, James and Alicia (b.~ 1841-2)were all born in Ireland, but don't know which county. I found a James Stacpole and Mary Nash marr in 1836 in Waterford on the IGI from the Family History Library and am trying to determine whether the IGI Mary and James are indeed my relatives. Any help would be appreciated.