Roger Casement - Wikipedia

Roger David Casement (Irish: Ruairí Dáithí Mac Easmainn;[1] 1 September 1864 – 3 August 1916), known as Sir Roger Casement, CMG, between 1911 and 1916, was a diplomat and Irish nationalist executed by the United Kingdom for treason during World War I. He worked for the British Foreign Office as a diplomat, becoming known as a humanitarian activist, and later as a poet and Easter Rising leader.[2]

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日本語記事もあるにはあるが記述がそっけないので