of one modern historian, "Count Suero by then controlled all of the mountainous area between León and Galicia north to the [Bay of] Biscay and a long salient, north of León and south of Oviedo, running eastward almost to the borders of Asturias de Santillana." The description of Suero's lordship in the Chronica is corroborated by the charters and suggests that the various tenencias he is known to have held on at least one occasion formed part of a vast extended territorial lordship granted him in region of intersection between the provinces of Asturias, Galicia, and León. The majority of Suero's territory lay in the western Cantabrian Mountains, but he also had considerable lands in the Tierra de Campos in León. His southernmost estate was at Toro on the Duero. In 1128 Suero and Enderquina not inaccurately boasted that their lands stretched from the Duero to the Bay of Biscay and from the Llorio in the west to the Deva in the east. Another indication of Suero's wealth is the size of his household, since in 1119 he was employing a notary (notarius) named Juan to draw up his documents. Disputes with Corias In 1114 Suero had to judge the first of three lawsuits he judged involving the monks of San Juan Bautista de Corias. He is known to have exchanged some estates with the monastery at an unknown date. In 1128 Suero twice got into a dispute with the monastery of Corias over a piece of land at Peñaullán. He appointed two of his own knights, Martín Martínez and Pedro Menéndez, to make an enquiry into the dispute and adjudicate it. On 1 February 1129 Suero and his brother Gutierre made exchange of properties. Later that year Suero and fellow Asturian Gonzalo Peláez were sent by the king to Almazán to negotiate with Alfonso the Battler, who still laid claim to the Leonese-Castilian throne. Gonzalo had long been a rival with Suero in western Asturias. In 1131 a monk of Corias was bringing a large load of wheat from León to Laciana through the lands governed by Suero when he was stopped by two of the count's officials and assessed a toll. He refused to pay it and the dispute became violent. Subsequently, Suero was forced by the monks of Corias to make an enquiry, appointing two of his knights, Pedro Garcés and Juan Pérez, with the task. Their