Duke Leopold IV of Austria was a member of the House of Habsburg, born in 1386. He ruled as the Duke of Austria from 1411 until his death in 1424. Leopold IV was known for his efforts to strengthen the Habsburg influence in the region and for his involvement in various military campaigns. During his reign, he faced challenges from rival factions and sought to maintain stability in his territories. Leopold IV was also a patron of the arts and contributed to the cultural development of Austria. His leadership helped lay the groundwork for the future expansion of Habsburg power in Europe.