Interesting thank you all. I had Rebeccas parents as John and Catherine and had placed them at Ballaslig with Edward born c1856 Catherine b 1857,but i recognise the family connection to the Kneales. So probably I am on the wrong track.
Thomas Corkish (thank you for information) and Rebecca had 6 children Ann b 1884 (born illegitimately, father?) Thomas b 1888 (presume died as infant) Thomas b 1890 (my grandfather) Catherine b1895 Winifred b 1898 Richard b 1902
I will see if I can untangle further!