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Wikipedia definition
1. Otto, Duke of AustriaOtto IV, the Merry (July 23, 1301 – February 17, 1339) was a Duke of Austria and the youngest son of Albert I of Germany and Elisabeth of Tirol. Otto was born in Vienna. He had two brothers, namely Frederick the Handsome and Albert II. From 1330 onwards, he ruled jointly with Albert. After the death of Henry of Carinthia, Emperor Louis the Bavarian gave Carinthia and the southern part of the Tyrol as an imperial fief on May 2, 1335, in Linz.
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