Baldwin IV of Jerusalem was a medieval king who ruled from 1174 to 1185. He became king at a young age after the death of his father, Amalric I of Jerusalem. Baldwin is notable for his struggle against the Muslim leader Saladin, who sought to reclaim Jerusalem for Islam. Despite his royal status, Baldwin IV suffered from leprosy, which affected his health and ability to govern. His reign was marked by military conflicts and political challenges, but he is remembered for his bravery and determination in defending the Kingdom of Jerusalem during a turbulent period in history.