Friedrich I (IV) SAXONY
He married Katharine, Princess of Brunswick Lunebu 7 Feb 1402 . Katharine, Princess of Brunswick Lunebu was born at of Luneburg, Hannover, Prussia Abt 1389 daughter of Heinrich II, Duke Brunswick Lunebu and Sofie, Princess of Pomerania .
They were the parents of 7
children:
Katharine, Princess of Saxony
born Abt 1408.
Friedrich II Saxony
born 22 Aug 1412.
Sigismund, Prince of Saxony
born 3 Mar 1416.
Anna, Princess of Saxony
born 5 Jun 1420.
Katharine, Princess of Saxony
born 1421.
Heinrich, Prince of Saxony
born 21 May 1422.
Wilhelm III Saxony
born 30 Apr 1425.
Friedrich I (IV) Saxony died 4 Jan 1428 at Altenburg, S-Altn, Thuringia .
Katharine, Princess of Brunswick Lunebu died 28 Dec 1442 at Grimma, Leipzig, Saxony .