Sisnando Davides

Sisnando (or Sesnando) Davides (also Davídez, Davídiz, or Davidiz, and sometimes just David; died 25 August 1091) was a Mozarab nobleman and military leader of the Reconquista, born in Tentúgal, near Coimbra. He was a contemporary and acquaintance of El Cid, but his sphere of activity was in Iberia's southwest.

Much information can be gleaned about Sisnando's life from the detailed narratives that begin the diplomas issued by his Abbadid-influenced Mozarabic chancery at Coimbra, though the authenticity of these has lately come to be doubted.

He was educated in Córdoba by Muslims. He was captured during a raid by Abbad II al-Mu'tadid of Seville and taken into the service of the latter. To the Arabs he was known as Shishnando. He served al-Mu'tadid as an administrator and ambassador, but he left Seville and entered the service of Ferdinand I of León in an identical capacity.

In the following years the towns of Galicia from Guimarães down to Coimbra were captured from the Moors, the latter on Sisnando's advice in 1064 or 1069, with Sisnando leading the siege and being granted the countship of the region south of the Douro from Lamego to the sea after his success. He took the title aluazir (vizier) de Coimbra.

Sisnando continued in the service of Ferdinand's successor, Alfonso VI. In March 1075 Sisnando was at Oviedo with the king—his first appearance at court>—and El Cid for the opening of the Arca Santa. Later that same month he was one of many judges in a case between the bishop of Oviedo and count Vela Ovéquiz concerning the property of the monastery of San Salvador de Tol, though only he and El Cid signed the decision. Later in the year Sisnando was the principal leader of Alfonso's expedition against Seville and Granada. He took part in the expedition against Granada in 1080 as well.

...
Wikipedia