Pierre Dupong. Pierre Dupong was a Luxembourgish politician and statesman. He served as prime minister of Luxembourg for sixteen years, from 5 November 1937 until his death, on 23 December 1953, and was also responsible at different times for the ministries of finance, the army, agriculture, labour and social matters. He founded the Christian Social People's Party (CSV) as the main conservative party after the Second World War, having been a founding member of the Party of the Right (PD) in 1914.