King of Asturias and León from the year 930 to 950, second son of Ordoño II.
His brother mayor, Alfonso IV, tired of his Government, although this point has been discussed, abdicated in around 930 931. Ramiro had to resolve some attempts of insubordination in his reign. Once restored the order and secured the power, he devoted himself to struggle with the Arabs. His exploits to this erspecto are very numerous. He arrived in their raids to Talavera in 932. These were not decisive victories that allowed new settlements; they dealt instead of plundering in order to cause the greatest possible number of casualties on the Muslim side and get some booty. The new raids carried out by land of Merida and Badajoz, did to the Muslims, led by the Caliph Abd al-Rahman III, called for holy war against the Christians. The reason for the bold action of the King Ramiro lies in the confidence that gave his coalition with the Muslim Governor of the city of Santarem, who had preferred to move on to the Christian side. The territorial limits were very unstable and ever-changing. The Douro River was often tacit border brand; through it to one side or toward, was supposed to go deep into enemy territory with the sole purpose of taking military action. Thus, the constant movement of King Ramiro by the Muslim side ended up exacerbating to Abd al - Rahman. But Ramiro ally desdijo Pact and returned along with the hosts of the Caliph, who attacked Christians near Simancas of the year 939. The Christian army was able to defend himself and defeated Abd al - Rahman. The raids continued in both directions. Muslims attacked Castilian lands and Ramiro came to aid of Fernán González.
This state of things, didn't last long. There were dissensions among the Christians themselves and Ramiro was imposing on Castilian count. Intended then the King put in front of Castile to his son Ordoño, which led to the uprising of the people. Ramiro opted for a diplomatic solution by returning to Fernán González his Government after submitting it to a solemn oath and Ordoño married Urraca, daughter of the Castilian noble.
In 950 he abdicated in favour of his son Ordoño III, and died the following year.