Louis I

Louis I (born Dec. 23, 1174, Kelheim, Bavaria—died Sept. 15, 1231, Kelheim) was the second Wittelsbach duke of Bavaria, who greatly increased his family’s territory and influence. Succeeding his father, Otto I, as duke in 1183, Louis enlarged the Bavarian domains and founded the cities of Landshut, Landau, Iser, and Straubing. In the struggle between Otto IV (of Brunswick) and Frederick of Hohenstaufen (Emperor Frederick II) for the throne of the Holy Roman Empire, he...