Roger David Casement, known as Sir Roger Casement, CMG, between 1911 and 1916, was a diplomat and Irish nationalist. 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. Described as the "father of twentieth-century human rights investigations", he was honoured in 1905 for the Casement Report on the Congo and knighted in 1911 for his important investigations of human rights abuses in the rubber industry in Peru.
In Africa as a young man, Casement first worked for commercial interests before joining the British Colonial Service. In 1891 he was appointed as a British consul, a profession he followed for more than 20 years. Influenced by the Boer War and his investigation into colonial atrocities against indigenous peoples, Casement grew to mistrust imperialism. After retiring from consular service in 1913, he became more involved with Irish republicanism and other separatist movements. During World War I, he made efforts to gain German military aid for the 1916 Easter Rising that sought to gain Irish independence.
He was arrested, convicted and executed for high treason.