Reynolds and O'Farrell

Looking for siblings and/or parents of Michael Reynolds (b. about 1827), a National School Teacher who lived at 15 Hyde Street in Mohill in the 1860's and 70's.  He married Isabella O'Farrell, the daughter of Denis and Elizabeth O'Farrell from Dublin on 17 Feb 1853.  Elizabeth O'Farrell came to live with Michael and Isabella and their children:  Lizzie, Stephan, Michael, Joseph, Francis, Mary Ann, Isabella, James, Catherine and Margaret, after Denis died (date unknown.)  Both Michael Reynolds and his wife Isabella were teachers, as was Isabella's mother.  Through research I've found mention of all three of them in school records.  Older children left for NY prior to 1879, Michael and Isabella and their six younger children immigrated to NY in 1879.  Lizzie married a Patrick C Dooley that I believe was from Mohill.  Am hoping to locate siblings/relatives of Michael Reynolds...something that is proving to be difficult without knowing the names of his parents!