O'Shannon was born in Marino, Dublin, Ireland, on 23 August 1928, the son of Cathal O'Shannon (Sr.), a Socialist and Irish Republican. He received his formal education at Colaiste Mhuire School, in Parnell Square, Dublin.<unk> He received his formal education at Colaiste Mhuire School, in Parnell Square, Dublin. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk> After air crew training he was posted to the Far East, as a rear gunner in an Avro Lancaster bomber to take part in the Burma Campaign, but the war ended with the fall of the Japanese Empire.<unk> After air crew training he was posted to the Far East, as a rear gunner in an Avro Lancaster bomber to take part in the Burma Campaign, but the war ended with the fall of the Japanese Empire.
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