Sancho III of Navarre
On the other hand, the first king of Aragón, Ramiro I of Aragon, was son of Sancho III of Navarre, grandson of García Sánchez II of Pamplona and great-grandson of Sancho Garcés II of Pamplona, all of them kings of Navarre who used the suffix "-ez" and that could have introduced it in this region.