Ryan was born in Albury, New South Wales in 1904 and ordained as a priest in the order of the Missionaries of the Sacred Heart in 1929.
After gaining a doctorate in Rome, he returned to Australia and for many years taught philosophy at the order's seminary in Kensington, New South Wales.
[4] During 1940-01, he took over the Question Box program on radio 2SM while the regular presenter, his colleague Dr Rumble, was touring America.
[7][8] His most prominent public activity was a debate in 1948 in Sydney with Edgar Ross of the Communist Party of Australia on "Whether Communism is in the best interests of the Australian people."
[13] He was vigorous in exposing organisations suspected of being Communist-led Also communist-controlled unions and the Queensland branch of the Legion of Ex-Servicemen[15] In 1943 Ryan accidentally shot and killed a man he mistook for a rabbit; the coroner found he was blameless.