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I checked on the subscription site Roots Ireland and there were no Catherine Cosgrove/Cosgrave baptismal records in Rathdrum around 1832. The earliest was in 1846 and the father was Patrick. I searched the subscription site Roots Ireland and located the record below in Dunlavin just to the northwest of Rathdrum. Possible record for your Catherine?
Name:Catherine CosgraveDate of Birth:
Date of Baptism:13-Apr-1834Address:
Sponsor 1 /
Informant 1:John Cunningham Sponsor 2 /
Informant 2:Bridget Dunne