Write to Rev. Fr. Ger Breen, Balyna Parish, Broadford Co. Kildare. He is quite approachable, and I am sure will help with information. There is a Parish Website which gives the years for Births, Deaths and Marriages in the Parish, I think it's www.balynaparish.ie, or just Google, Balyna Parish, Co Kildare.
Best of Luck with your research. (I found a lot of my in-laws through Balyna records some years ago.)