Eric II of Saxe-Lauenburg was a German nobleman who ruled as the Duke of Saxe-Lauenburg from 1422 until his death in 1459. He was a member of the House of Ascania and played a significant role in the politics of northern Germany during the late Middle Ages. His reign was marked by efforts to strengthen his duchy and maintain its independence amid the complex feudal landscape. Eric II was known for his diplomatic skills and alliances, which helped him navigate conflicts with neighboring territories. He also focused on economic development within his duchy, promoting trade and agriculture to enhance the prosperity of his subjects.