Frederick II of Habsburg

Frederick II of Habsburg (1327–1344) was the elder son of Otto the Merry, Duke of Austria, and Elizabeth of Lower Bavaria. After Otto's death in 1339 he and his brother Leopold were titular dukes under the guardianship of their uncle Albert II. That year Frederick claimed Lower Bavaria as his mother's inheritance, but Emperor Louis IV rejected his suit.

He held the Further Austrian lands. A marriage to a daughter of Edward III was planned but never came about. He died suddenly at Neuberg in December 1344, amid suspicions of poisoning.