Ryan and Raleigh family in limerick to OSheas of cork

Hi all Through matching of various names and dna matches on ancestry Ive found a good lead and connection in the Ryan / Raleigh family Of limerick. A very helpful member called Mary helped me a great deal and now Im just trying to piece together the last big mystery. The 2 strongest links are sisters Catherine (Kate) Ryan and Johanna Raleigh Ryan whose lines continues on to matches for my grandmother pat. The match is of 4 - 6th cousins. Catherine and Johanna's parents were Edmond (Ned?) Ryan and Ellen Raleigh. The theory is Mary OShea b 1872 ( parents John OShea and Annie OConnell) had a illegitimate daughter also called Mary born in 1897 in kanturk And that the fathers last name was Ryan. My grandma was 1897 Marys daughter. I was just wondering who do we think Marys Ryan father was? Should I guess at maybe one of Johanna's and Catherines brothers? Or maybe a generation back? Im not sure on the dates a generation back and quite a few of Edmond and Ellens children seem to have died quite young as the names repeat themselves, also Considering the OSheas were from cork and Ryans from limerick. Just wondering if anyone had any guesses or thoughts. Edmond and Ellens children - They had thirteen children, all born at Knocklong, County Limerick: Patrick, Johanna, John, Patrick (2), Mary, Johanna(2), John (2), twins James and Timothy, Catherine, James (2), Timothy (2), Ellen. The children were born between 1850 and 1867. The repeating names suggested that at least five did not survive infancy. ( Johanna (2) and Catherine are my strong links on ancestry) Thanks all Best Kerri