Ramiro II
After a few years of civil wars during the reigns of Fruela II, Alfonso Fróilaz and Alfonso IV, Ramiro II (931–951) assumed the throne and brought stability to the kingdom. A brave military commander who defeated the Muslim armies in their own territory, Ramiro's expeditions turned the Valley of the Douro into a no-man's land that separated Christian kingdoms in the north of Iberia from the Muslim states in the south. Ramiro II was nicknamed "The Devil" by Muslims because of his great military skill.