The RC parish for Inch civil parish would be Crossgar. The parish register is not available online on the NLI site, however, Roots Ireland has baptisms from 1837-1899. I searched for children of John Croskery and two records came up. One in 1839 and the other in 1845. Unfortunately, no names were shown for the children and the mother's name was not shown.Presumably, the register does not have the name of the child or the mother's name.Strange!
I did find an 1842 baptismal record in Crossgar for an Elizabeth Croskery and no mother's name was shown.
Name:Elizabeth CroskeryDate of Birth:
Date of Baptism:12-Dec-1842Address:QuintugherParish/District:CROSSGAR (KILMORE)Gender:FemaleCountyCo. Down