Ernst Johann von Biron

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Ernst Johann von Biron
Duke of Courland and Semigallia
Portrait, c. 1730
Duke of Courland and Semigallia
Reign	1737–1740
Predecessor	Ferdinand
Successor	Council of the Duke
Reign	1763–1769
Predecessor	Charles
Successor	Peter
Regent of Russia
Regency	28 October – 20 November 1740
Monarch	Ivan VI
Successor	Anna Leopoldovna
Born	(1690-11-23)23 November 1690 Kalnzeem, Semigallia, Courland and Semigallia
Died	29 December 1772(1772-12-29) (aged 82) Mitau, Courland and Semigallia
Burial	Ducal crypt in the Jelgava Palace
Spouse	Benigna Gottlieb von Trotha gt Treyden ​ ​ (m. 1723)​
Issue	Peter, Duke of Courland Hedvig, Baroness Cherkasova Prince Karl Ernst
House	Biron
Father	Karl von[citation needed] Bühren
Mother	Catharina Hedwig von Raab gt Thülen[1]
Religion	Lutheranism

Ernst Johann von Biron (German: Ernst Johann von Biron; Russian: Эрнст Иоганн Бирон; 23 November [O.S. 13 November] 1690 – 29 December [O.S. 18 December] 1772)^[2] was Duke of Courland and Semigallia from 1737 to 1740 and again from 1763 to 1769. He was also briefly the regent of the Russian Empire in 1740.^[3]