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https://stairnaheireann.net/2015/12/09/1920-ira-officer-ernie-omalley-is-captured-by-british-forces-kilkenny-with-a-notebook-containing-names-of-his-ira-colleagues/
1920 – IRA officer Ernie O’Malley is captured by British forces Kilkenny with a notebook containing names of his IRA colleagues