She was already married to Count Nuño Pérez de Lara in 1152 when both ceded Castronuño to its inhabitants and established its borders, maintaining certain rights over the village after King Alfonso VII of León and Castile donated it in 1156 or 1157 to the Knights Hospitaller.
In 1174, they gave the bishop of Burgos the village of Barchilona in exchange for all the rights and properties of the hospital in Puente de Fitero which they had founded and donated to the Knights Hospitaller.
Thanks to this marriage, her children lived at the court and boasted of being the offspring of a queen of León as attested by a charter where her son Álvaro making a donation to the Monastery of Sobrado called himself filius comitis domni Nunonis et regine domne Tarasie.
[3] Her remains were placed in a stone coffin the cover of which bore a half-length effigy of the late queen wearing a dress with tight gem-studded cuffs and neckline.
Her hair was loose and a royal crown was placed around her forehead and the following Latin inscription was carved around the edges of the cover of her tomb: LARGA MANUS MISERIS, ET DIGNIS DIGNA REPENDENS CONSTANS, ET PRUDENS PIETATIS MUNERE SPLENDENS, HIC REGINA JACET CONJUX TARESIA REGIS FERNANDI SUMMI SIBI DENTUR GAUDIA REGIS.