La Bureba
As lord of La Bureba ("tenente Boroviam"), Gonzalo appears over fifty times in contemporary documents beginning in 1122. His sphere of activity was also very wide: he was in Burgos in 1144, he signed the "fueros" of Pancorbo in 1146, and in 1148 he was at "Castro surit" on 2 May and Burgos on 10 May. In all he appears in twelve different locations, besides León and Navarre as mentioned above. The numerous references to him in Alfonso VII's charters of 1147 suggests that he probably took part in the campaign against Almería that year. On 20 November 1148 he is recorded in connexion with the Lara family. On 15 February 1149 Gonzalo is referred to in a document as "filius comitis", "son of the count", indicating the highest noble status for his father in Castile. From that year on he was active at the court of Sancho III, but appears to have ceased to govern La Bureba. In 1156 he was lord of La Bureba again and no longer "alférez". In January 1158 he witnessed the king's granting of Calatrava to the newly founded Order of Calatrava. From then until 1165, during the minority of Alfonso VIII, he disappears from the record, but probably he was preoccupied by the invasions of La Bureba by both the Leonese and the Navarrese.