• Born: Between 1033 and 1037
• Married: Before 7 Dec 1057
• Died: After 29 Nov 1074

  Research Notes:

"Sancius rex" granted property to "senior Sancio Furtuniones" by charter dated 7 Dec 1057, confirmed by "…Infante domno Santio et uxor eius domna Contanza…". Salazar y Acha discusses her possible parentage, her possible betrothal and her marriage. The Crónica Najerense records that “infans domnus Sancius, quem rex Garsias Pampilonensium ex concubina habuerat” abducted “filiam regine Stephanie”, who was betrothed to “Santius rex”, and took her to the court of the Moorish king of Zaragoza and later to Ramiro I King of Aragon, triggering the war between Castille and Aragon during the course of which the Aragonese king was killed in 1064. Salazar y Acha hypothesises that this alleged daughter of Stephanie de Foix, wife of García V King of Navarre, was Constanza, born from an otherwise unrecorded earlier marriage with a noble at the court of Barcelona. He cites the charter dated 29 Nov 1074 under which Sancho IV King of Navarre granted “unas casas en la ciudad de Calahorra” to “germano meo domno Sancio et uxori vestra vel germana mea domna Constanza”, suggesting that it would be unusual for King Sancho to refer to his brother´s wife as “germana” unless there was also a blood relationship between them. However, Salazar y Acha´s hypothesis, although appealing, appears unlikely to be correct because Queen Estefania does not include Constanza in her testament dated to [1066] which names all her other known children. ¹