Janet:
Welcome to Ireland Reaching Out!
I assume you have the 1906 marriage of Mary Grace to John Brennan, if not, the record is below along with the 1911 census for the family.
https://civilrecords.irishgenealogy.ie/churchrecords/images/marriage_re…
http://www.census.nationalarchives.ie/pages/1911/Kilkenny/Urlingford/Ur…
I searched the subscription site Roots Ireland and located a possible birth record for Mary Grace. Also, looked for James Callaghan and found two possible records.
Roger McDonnell
Name:Mary GraceDate of Birth:20-May-1879
Registration Date:
Address:PottlesrathParish/District:CALLANGender:FemaleCountyCo. Kilkenny
Denomination:Civil Parish / District
Father:Michael GraceMother:Bridget Corcoran
Name:James O CallaghanDate of Birth:24-Jun-1869
Date of Baptism:26-Jun-1869Address:High StreetParish/District:ST. MARY'SGender:MaleCountyCo. Kilkenny
Denomination:Roman Catholic
Father:William O CallaghanMother:Margaret O TooleOccupation:
Sponsor 1 /
Informant 1:John Neary Sponsor 2 /
Informant 2:Mary Burke
Name:James O'CallahanDate of Birth:20-Sep-1873
Date of Baptism:23-Sep-1873Address:ThomastownParish/District:THOMASTOWNGender:MaleCountyCo. Kilkenny
Denomination:Roman Catholic
Father:Francis O'CallahanMother:Ellen O'ReganOccupation:
Sponsor 1 /
Informant 1:John Jones Sponsor 2 /
Informant 2:Mary Davis
