Kelly of Derryloughan West

I am trying to identify the family of my GGM Sarah Kelly Kain (Kane Keane).  The strongest possibility is that her family is the Andrew Kelly family of Derryloguhan.  Sarah birth date is estimated (based on marriage date) is 1853, her dad was listed as Andrew Kelly of Derryloguhan, no birth or baptismal record have been found for Sarah.

Andrew Kelly of Derryloguhan married Catherine Conneely on 28 Jan 1855 and they had 3 children, Patrick  30 Jan 1856, Judith 26 Oct 1862 and Margaret 9 Feb 1865 no baptismal record found for Sarah.  The marriage date for Andrew and Catherine was two years after Sarah was born, so Catherine was probably not Sarah's mother.  Andrew may have been previously married to the mother of Sarah, or this is not Sarah's family. 

Are there any Kelly's from the Furbro Spiddal Derryloughan area that have an accurate family tree or have had their DNA tested?

The other possibilites of who Sarah Kelly's family is:  Andrew Kelly from Allaphreaghaun, Andrew Kelly from Knockanacut, Andrew Kelly from Seershin, Andrew Kelly from Knockavoddy (also lived in Derryloughan) and Andrew Kelly from Aille.

I think it is going to take DNA to solve this mystery. Please let me know if you have anything that could help.