Ramiro I of León was a king who ruled from 842 to 850 AD. He was a member of the Asturian royal family and the son of Ordoño I. His reign marked a significant period in the early history of the Kingdom of León, as he worked to consolidate power and expand the territory. During his rule, Ramiro I faced challenges from both internal factions and external threats, particularly from the Muslim forces in the Iberian Peninsula. He is known for his military campaigns that aimed to defend and strengthen his kingdom, laying the groundwork for future rulers of León.