923–931), was a Spanish noble and the count of Lantarón and of Álava in the region that today would be considered the Basque Country in northern Spain.
[1] In 923, Álvaro participated in the conquest of Nájera and Viguera alongside king Ordoño II of León and on 20 October of that same year, he confirmed the foundational charter of the monastery at Santa Coloma, La Rioja.
[1] After the defeat of the armies of the kingdoms of León and Navarre on 26 July 920 at the Battle of Valdejunquera, King Ordoño could have replaced Munio Vélaz — who confirms as Count of Álava for the last time on 18 May 919 —[5] and named Álvaro in his stead.
[11] He married Sancha Sánchez of Pamplona,[12] daughter of King Sancho Garcés I and queen Toda, and the widow of Ordoño II.
Sancha was the sister of Oneca, the wife of King Alfonso IV of León,[10] and of Velasquita, married to Count Munio Vélaz of Álava.