Raymond in Galicia in December 1107. Only a day after the burial of Alfonso VI, on 22 July 1109, Suero was again one of those who confirmed Urraca's first act as successor. After the coronation of the queen's son by Raymond of Galicia, Alfonso VII, in September 1111, Suero, owing in part to his proximity to the Galician power base of Alfonso VII's backers, was the queen's most important supporter. By the fall of 1116 negotiations had begun between Urraca and Alfonso at Sahagún. According to the Historia compostellana, Suero and fellow Asturian Munio Peláez were the main defenders of the former, while the latter was supported by Diego Gelmírez, Archbishop of Santiago de Compostela, and Pedro Fróilaz de Traba. At Sahagún it was agreed to divide the realm into two spheres of authority, but these are not defined, although Galicia went undoubtedly to Alfonso VII. The accord was to last three years. In February 1117, however, Suero confirmed a diploma of Alfonso the Battler's as "Count Suero of Luna", perhaps having received Luna, in the mountains of León, from Alfonso. Suero can be further cited ruling Luna between 14 April 1117 and 27 March 1131. Suero and Enderquina received a gift of royal largesse as a reward for their loyal service ("in return for service", propter servicium) on 27 April 1120 from Urraca. On 26 March 1128 they received a second gift from Alfonso VII. On 29 May 1117 Suero and Enderquina exchanged the monasteries of San Salvador de Perlora and San Andrés de Pravia with Bishop Pelayo of Oviedo for the monastery of San Juan de Teverga. This transaction was made in León, where it was confirmed by Urraca. On 4 March 1120 or 1121 Suero and Enderquina granted some properties they owned in Burgos to the Cathedral of Burgos. This charter survives in its original in the archives of the cathedral. Donations of Cornellana In 1120 Suero made several deals with his relatives to gain control over their shares of the monastery of Cornellana, thus gaining sole proprietorship. That year he made two donations to the monastery (22 January and 8 November). At Lugo on 7 March 1122, in the presence of the royal court, Suero and Enderquina donated Cornellana to the Abbey of Cluny. Along with Cornellana itself they donated a block of properties "acquired by inheritance or by [their] own efforts" (de parentibus nostris vel