Help in locating parents c& siblings of my 2GGM, MaryAnn Murphy nee ORiordan (1830, Tooreenbawn , MillStreet , Cork -1912, Mar 17, Bandon , Cork).

Hi all, I’m trying to trace  biological parents & siblings of my 2GGM,Mary Anne Murphy nee O’Riordan (1830-1912) who married Edward Joseph Murphy (1826-1886) on July 15, 1848 in Mill Street, Cork . They had many children between 1850-1870, amongst whom features my GGM, Mary Ann (Marion Murphy nee Murphy (1863, Taghmon -1932, Oct , Cork Hospital ). I think

MAM’s father is Matthias O’Riordan (1803,Christ Church , Cork -c.1845), farmer of Cockhill , Toorenbawn via MillStreet , cork and Ellen McSwiney (1807-1976, cork city). Where are they all buried ? Please help me out. Regards, Tim Murphy (Melbourne ,Au)