Friedrich III "der Strenge" , Landgrave of THURINGIA
Invalid baptism temple code: Albert.
He married Katharine, Countess of Henneberg Schleusingen . Katharine, Countess of Henneberg Schleusingen was born at of Schleusingen, Sachsen, Prussia Abt 1332 daughter of Heinrich XII (VIII) , Count of Henneberg and Judith Princess of Brandenburg .
They were the parents of 4
children:
Friedrich, Prince of Thuringia
born Abt 1360.
Friedrich I (IV) "the Warlike" Prince of Thuringia, Elector of Saxony
born 11 Apr 1370.
Wilhelm II "der Reiche" , Prince of Thuringia
born 23 Apr 1371.
Georg, Prince of Thuringia
born 1380.
Friedrich III "der Strenge" , Landgrave of Thuringia died 25 May 1381 .
Katharine, Countess of Henneberg Schleusingen died 15 Jul 1397 at Meissen, Dresden, Saxony .