Ki vette feleségül Louis I, Count of Loon-t?

Louis I (Latin Ludovicus, German Ludwig, Dutch Lodewijk; died 11 August 1171) was the Count of Loon, now in modern Belgium, and Burgrave of Mainz, in Germany. He inherited these offices from his father. He also established the County of Rieneck apparently based upon the Burgrave's lands.