The RC parish for the civil parish of Erke is Johnstown and the records go back to 1814. I searched the Johnstown records on Roots Ireland www.rootsireland.ie and found a record for Margaret, Richard and Mary for the years mentioned above in the Johnstown records. The parents were Michael and Mary. I assume the other children are also there.
Roots is a pay site to view a transcription of a church record. I did not locate the marriage.