An undated charter refers to a confirmation by “rex domnus Garcia et regina domna Urraca maiore”. Her origin is not known. Rodrigo Ximénez de Rada, writing in the first half of the 13th century, records that "Enecho…Arista…filium Garsiam" married "Urracam, de Regio semine". Jaurgain suggests that "de Regio semine" should be interpreted as meaning "de la même race que lui" (based on his assumption that the kings of Navarre were descended from the dukes of Gascony, about which there appears to be no proof) and that Urraca was "fille de Sanche-Sancion duc de Vasconie", although he cites no primary source which confirms this parentage. Her origin is discussed by Salazar y Acha who suggests that she was a member of the Banu Qasi family, related to the second wife of Fruela II King of Asturias, which would account for the introduction of the name Fortún into the family of the kings of Navarre. 1