Chi ha sposato Louis I, Landgrave of Thuringia?

Louis I (died January 12, 1140) was ruler of Thuringia from 1123 to 1140.

Hedwig of Gudensberg, also known as Hedwig of Hesse (1098–1148) was German regent: she served as regent of Thuringia during the minority of her son Louis II from 1140.