Kurš apprecējās ar Hermann I, Landgrave of Thuringia?

Hermann I (died 25 April 1217), Landgrave of Thuringia and (as Hermann III) Count Palatine of Saxony, called the Hard, was the second son of Louis II, Landgrave of Thuringia (the Iron), and Judith of Hohenstaufen, the sister of Emperor Frederick Barbarossa.

Sophia (Sophiam) of Wittelsbach (1170–1238) was a daughter of Otto I Wittelsbach (Count Palatine and later Duke of Bavaria) and his wife Agnes of Loon.

In 1196, Sophia married Landgrave Hermann I of Thuringia; she was his second wife. They had the following children:

• Irmgard (b. 1197), married in 1211 to Count Henry I of Anhalt
• Louis IV (1200–1227)
• Herman (1202–1216)
• Conrad (1204–1247), grand master of the Teutonic Knights
• Henry Raspe (1204–1247)
• Agnes, married twice:
  1. in 1225 to Henry "the Profane" of Babenberg (1208–1228), a son of Margrave Leopold VI of Austria
  2. in 1229 to Duke Albert I of Saxony (c. 1175 – 1261)