Not sure if these are too late to be your line; they are from www.rootsireland.ie/:
These are the John Coynes to Marys; there are several others from Ballinakill of Coynes marrying Marys
Date of Marriage:10-Jan-1870
Parish / District:BALLYNAKILL
County:Co. Galway
Husband
WifeName:JohnCoyne
MaryLyden
Date of Marriage:15-Aug-1872
Parish / District:BALLYNAKILL
County:Co. Galway
Husband
WifeName:JohnCoyne
MaryConroy
Date of Marriage:03-Jul-1882
Parish / District:BALLYNAKILL
County:Co. Galway
Husband
WifeName:JohnCoyne
MaryCoyne
Date of Marriage:01-Aug-1882
Parish / District:BALLYNAKILL
County:Co. Galway
Husband
WifeName:JohnCoyne
MaryWalsh
Name:Peter CoyneDate of Birth:
Date of Baptism:14-Oct-1877Address:CloonParish/District:BALLYNAKILLGender:MaleCountyCo. Galway
Denomination:Roman Catholic
Father:John CoyneMother:Mary Conry
Name:Peter CoyneDate of Birth:
Date of Baptism:06-Jul-1879Address:CreraghParish/District:BALLYNAKILLGender:MaleCountyCo. Galway
Denomination:Roman Catholic
Father:John CoyneMother:Mary LydenOccupation:
Sponsor 1 /
Informant 1:John LydenSponsor 2 /
Informant 2:Bridget Lyden
I wonder if the fact that she rented from a Rev means that she was C of I?
Col