The witnesses' of the marriage of Mary Finneran & Thomas Harney were a Thomas Feneron & Cornelius Reddington.
Baptismal sponsors of their children included Jacobus & Thomas Finneran.

I have the following possible patism's for Mary in the area (obviously with a name like Mary and given the state of the records for this time period there may be more):

Some possible baptism records for Mary Feneran:
(i) Mary Fenaron on 25 February 1797 to Thomas Fenaron & Catherine Macken. Sponsors: Bernard Keegan & Ann Kelly
(ii) Mary Fenneran on 21 February 1800 to Patrick Fenneran & Hanora Kenny, Sponsors: not given.

There are also no Peter's listed downstream as family names, hence this connection is not clear to me, which is why I am asking for the clarification,

regards,
Graeme Legg.