crusade against the pagan Prussian and Lithuanian tribes. His nickname the Merry refers to the festive life at his court. Otto died at Neuberg Abbey at the age of 37. His sons and titular successors Frederick II and Leopold II died shortly afterwards in 1344 (presumably poisoned), and the line became extinct. Marriages and children On 15 May 1325, Otto married his first wife Elizabeth of Bavaria. She was a daughter of Stephen I, Duke of Bavaria and Jutta of Schweidnitz. They had two children: Frederick II (10 February 1327 – 11 December 1344) Leopold II, Duke of Austria (1328 – 10 August 1344) Elizabeth of Bavaria died on 25 March 1330. Otto remained a widower for almost five years. On 16 February 1335, Otto married his second wife Anna of Luxembourg, daughter of King John of Bohemia and his first wife Elizabeth, a member of the Přemyslid dynasty. They would have no children. Anna died on 3 September 1338. Otto had four illegitimate sons who appear in genealogies. The identities of their mother or mothers and their later fates are unknown: Otto Leopold Johann Leopold. Ancestry |- External links Otto the Merry Otto the Merry 14th-century dukes of Austria Otto the Merry Otto the Merry People of the Northern Crusades Sons of kings