Dee ihe na-esote paragraf a - A mụrụ O'Shannon na Marino, Dublin, Ireland, n'abalị iri abụọ na atọ n'ọnwa Ọgọstụ n'afọ 1928, nwa Cathal O'Shannon (Sr.), onye Socialist na Irish Republican. Ọ nwetara agụmakwụkwọ ya na Colaiste Mhuire School, na Parnell Square, Dublin. N'agbanyeghi ndọrọ ndọrọ ọchịchị nna ya, dịka O'Shannon dị afọ iri na isii wepụtara onwe ya maka oge agha na Royal Air Force na Belfast na 1945 n'oge Agha IIwa nke Abụọ, na-eji asambodo ọmụmụ adịgboroja iji kpuchie ịbụ onye na-erubeghị afọ iri na ụma maka ịbanye na British Armed Forces. Mgbe a zụchara ndị na-anya ụgbọelu, e zigara ya n'Ebe Ọwụwa Anyanwụ Dị Anya, dịka onye na-agba egbe n'azụ ụgbọelu Avro Lancaster iji sonye na Mgbasa Ozi Burma, mana agha ahụ kwụsịrị na ọdịda nke Alaeze Ukwu Japan
tupu a chọọ ka ọ na-aga agha.