Gõcauo is a Mozarab from the town of Écija, in the Kingdom of Castille, León, and Asturias lying between Córdoba and Sevilla.
He was raised by his father who was a caballero villano, his mother died while he was still very young. During his youth his father was given an exemption to provide military service so he could raise his son. Once he was in his teens his father also died in one of the many boundary skirmishes between the Emirate of Granada and the Kingdom of Castille.
Having inherited very little from his father and spurred on by tales of Rodrigo Díaz de Vivar, he stuck out on his own to find his fortune. He wandered and fought along the border of Granada finally making his way to Al-Maghrib al Aqşá; there he served in the armies of Sultan Abu Sa'id Uthman II.
In 1322 he marched with Sultan Abu Said Othman marched against the his rebellious son Abu Ali and defeated him by the Oum er-Rebia. In 1329 the Sultan sent his armies to assist the Emirate of Granada against the Castilians; the Sultans armies were victorious over the Castilians at Algeciras and were able to establish a foothold in the hopes of reversing the Reconquista; dismayed by this turn of events Gõcauo heads back home to Castille.
With his earnings he was able to set himself up as a caballero villano back in Écija. Then in the summer of 1330 King Alfonso XI's army came through the town on the march towards Teba; with them came seven foreign knights from Scotland with their retinue. Gõcauo was one of several caballeros villanos who were assigned to adivse Sir James Douglas and his knights as they were accustomed to the style of fighting on the Frontera.
During the Battle of Teba in August of 1330, Sir James Douglas and his contingent
pursued the fleeing enemy closely until, having outrun most of his men, Sir James found himself out in front with only a few followers, while trying to rejoin the main body the agile Moorish cavalry saw their opportunity, rallied and counter-attacked. Gõcauo and several other of Douglas's men were unable to reach them before they fell in battle, including Sir William St Clair and the brothers Sir Robert and Sir Walter Logan.
Douglas' body, together with the casket containing the embalmed heart of Robert the Bruce, were recovered after the battle. Douglas' bones, the flesh boiled off them, and the casket were taken back to Scotland by his surviving companions. Impressed by their prowess, chivalry and honor Gõcauo became friends with one their retinue and returned with them to Scotland.
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