Gannon/Ryder family

My father, Michael Patrick Gannon, was born in the Kilmeena area in 1910. His parents were James Gannon and Mary Jane O'Grady. James' parents were Michael Gannon and Anne Ryder. What I am looking for is the names of Michael's parents. On the 1901 census Michael is listed as being 70 so he was probably born in 1830. He must have died sometime between 1901 and 1911 as he is not listed on that census for 1911. Anne's parents were Patrick Ryder and Anne O'Meara. Anne was born in 1839 and died in 1879, apparently as a result of childbirth. So what I would like is any information on the identity of great grandfather's parents. Thanks for any help you can provide.