Family of Brigid Keogh born about 1842-1844

My great grandmother was Brigid Keogh who married Martin Leo in 1869 at Killimore. Brigid was born around 1852. Her mother was Mary ..... who was born about 1826. I have not been able to find who her Keogh father was. At her wedding one of the witnesses was Teresa Burke. I have a Denis James Keogh married to Teresa Burke about 1844. This was Denis keogh's 2nd marriage. His first marriage was to Catherine Sharkey in St Peters Athlone in January 1832. Catherine was buried in the Athlone cemetery July 1842. I am trying to see if there is a connection to The Keogh families in Athlone. Do any of these names sound familiar to any Keogh residents. I have done my DNA through Ancestry and the kit number is A622326 if anyone wants to run it through GEDMATCH as a comparison.