Claim: Urraca of Covarrubias was given many properties in 978 AD which became known as the Infantado.
Evidence: On 24 November 978, her parents gave her the place known as Covarrubias and many other villas and properties throughout Castile as well as the Abbey of Saint Cosme and Saint Damian, and other villas and salt mines in Álava. All of these properties would become what was known as the Infantado which in the future would be assigned to any infanta or daughter of a count of Castile who remained single.