Ramiro I of Aragon

Ramiro I (before 1007–1063) was the illegitimate son of King Sancho III of Pamplona. When Sancho III divided his realm in 1035, Ramiro received the county of Aragon and ruled it as its first king, though he styled himself only son of King Sancho.

He challenged his half-brother García of Navarre and, despite defeat at Tafalla, gained territory including Sangüesa. In 1043 he annexed Sobrarbe and Ribagorza and fixed his capital at Jaca.

He married Ermesinda of Bigorre, and their son Sancho Ramírez succeeded him. Ramiro was killed attacking Graus on 8 May 1063 and was buried at San Juan de la Peña.