King Sancho IV of León was a monarch who ruled from 1284 to 1295. He was part of the House of Ivrea and succeeded his father, Alfonso X of Castile. Sancho IV is known for his efforts to consolidate power and strengthen the kingdom during a time of political instability. During his reign, Sancho IV faced challenges from both internal factions and external threats. He worked to improve relations with the Noble class and sought to expand his territory. His reign is often noted for its attempts to maintain peace and stability in the Kingdom of León.