Ernst Johann von Biron was a Duke of Courland and Semigallia and briefly regent of the Russian Empire in 1740. Wikipedia
Born: November 23, 1690, Kalnciems, Latvia
Died: December 28, 1772 (age 82 years), Jelgava, Latvia
Great grandchildren: Anna Wielhorskaya, Iosif Vielgorsky, Louis de Talleyrand-Périgord, and more
Children: Peter von Biron, Karl Ernst von Biron, and Hedvig Elizabeth von Biron
Spouse: Benigna Gottliebe Biron (m. 1723–1772)
Grandparents: Christina Margarete von Bergholtz, NN Goeteke, Caspar von Raab gen. Thülen, and more