Frederick III, Landgrave of Thuringia

Frederick III, the Strict (Friedrich III. der Strenge; 14 December 1332, Dresden – 21 May 1381, Altenburg), Landgrave of Thuringia and Margrave of Meissen, was the son of Frederick II, Margrave of Meissen and Mathilde of Bavaria. It is the ancestor of Elizabeth II in a fully male line.

Frederick III
Friedrich III of Thuringia, painting from Albrechtsburg in Meißen.
Margrave of Meissen
Reign	1349-1381
Successor	Friedrich der Streitbare, Wilhelm der Reiche & Georg
Landgrave of Thuringia
Reign	1349-1381
Coronation	1349
Predecessor	Frederick I
Successor	Balthasar
Born	14 December 1332 Dresden, Margravate of Meissen, Holy Roman Empire
Died	21 May 1381(1381-05-21) (aged 48) Altenburg, Electorate of Saxony, Holy Roman Empire
Burial	Altzella Abbey
Spouse	Catherine of Henneberg
Issue	Friedrich Frederick I, Elector of Saxony Wilhelm II, Margrave of Meissen Georg
Full name Frederick the Strict
House	House of Wettin
Father	Frederick II, Margrave of Meissen
Mother	Mathilde of Bavaria

He took over the government for his brothers William, Balthasar and Ludwig (Bishop of Bamberg) after the death of their father in 1349. One year later the Emperor gave the Margraviate of Meissen to the four brothers jointly. In 1368 common government began, afterwards the brothers changed rulership every two years. In 1379 they divided their possessions. After Frederick III's death, Meissen was divided between his three sons and Thuringia was inherited by his brothers; it later passed to his nephew Frederick IV, Landgrave of Thuringia, son of his brother Balthasar, and was ultimately inherited by Frederick the Strict's grandson, Frederick II, Elector of Saxony.