Charles IV of Navarre was a king who ruled from 1387 to 1425. He was born in 1332 and was a member of the House of Evreux. His reign was marked by political challenges, including conflicts with neighboring regions and internal strife within his kingdom. Charles IV was also known for his efforts to strengthen the economy and improve the administration of Navarre. He worked to maintain the independence of his kingdom while navigating the complexities of French and Castilian politics during a turbulent period in medieval Europe.