Murphy family Auburn, NY back to Davidstown, Kildare

I am looking to link a large family of Murphy siblings who came together on the America arriving on 7 Nov 1850 in New York.I have the family well documented in Auburn, Cayuga Co NY and two of the siblings list on their tombstones that they came from Davidstown, County Kildare.Am trying to find their parents and any information as to whether other siblings remained in Ireland.Names are Michael, James, Edward, John, Maurice, Esther, Thomas and Susan.

Does anyone happen to know anything about them in Kildare?