Ludwig I (23 December 1173 – 15 September 1231), called the Kelheimer or of Kelheim, since he was born and died at Kelheim, was the Duke of Bavaria from 1183 and Count Palatine of the Rhine from 1214. He was the only surviving son of Otto I, Duke of Bavaria (the first duke from the House of Wittelsbach) by his wife Agnes of Loon. He married Ludmilla of Bohemia, a daughter of Duke Frederick of Bohemia.
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👉 Louis I Wittelsbach, Duke of Bavaria in the context of Otto II Wittelsbach, Duke of Bavaria
Otto II (7 April 1206 – 29 November 1253), called the Illustrious (German: der Erlauchte), was the Duke of Bavaria from 1231 and Count Palatine of the Rhine from 1228. He was the son of Louis I and Ludmilla of Bohemia and a member of the Wittelsbach dynasty.
The poet Reinbot von Dürne was active at his court.