"Joachim Christian, Count von Blumenthal (6 December 1720 – 17 March 1800) succeeded his uncle Ludwig von Blumenthal as President of the Prussian General War and Finance Directory (effectively Minister War and Finance) of Prussia and remained so until the time of the Napoleonic Wars.
His parents were Heinrich Albrecht von Blumenthal (1693–1767), Lord of Quackenburg, and Katharina von Lettow (1702–1743). His brothers Georg von Blumenthal und Werner (1725–1804) were both senior officers in the Prussian Army.
Blumenthal was lord of Steinhöfel (Brandenburg), Groß Möllen (Pomerania), Loiste and various other estates. He entered the Prussian Civil Service. In 1743 he was a "Councillor" of the War and Domains Directory, where he worked in Gumbinnen before being transferred to Königsberg in 1746. In 1755 he became President of the War and Domains Chamber in Magdeburg, where he caught the eye of Friedrich the Great who in 1763 appointed him Privy State and War Counsellor and presiding Minister of the General War and Finance Directory as well as Vice President of the General Finance, War and Domains Directory in Berlin. He was also responsible for the Provinces of Prussia and Lithuania, as well as the salt business." - (en.wikipedia.org 22.06.2020)
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