Visconti of Pisa and Sardinia Ubaldo. In 1207, Lamberto married Elena, the heiress of Barisone II of Gallura, thus securing control over the northeastern corner of Sardinia with his capital at Civita. In 1215, he and Ubaldo established their hegemony over the Giudicato of Cagliari in the south of the island as well. Through advantageous marriages, Lamberto's son, Ubaldo II, secured power in Logudoro for a time. By mid century, Pisan authority was unopposed in Sardinia, thanks to intermarriages between the Visconti family and the other great families of Pisa (Gherardeschi and Capraia) and Sardinia (Lacon and Bas-Serra). Visconti of Pisa and Sardinia The Visconti
Vandal Sardinia Belisarius had defeated Gelimero on August 30, 533 and occupied Carthage. He was followed by Cirillus, who had failed to reach Sardinia. Tzazo and Gelimer, together with what remained of the army, marched against the Byzantines but were defeated at the Battle of Tricamarum, from Carthage. Tzazo was killed while Gelimero, escaping capture, surrendered a few months later. Cirillus then went to Calaris where he showed Tzazo's head impaled on a pike to the Vandals of the garrison, who immediately surrendered. Thus the Vandal era in Sardinia ended in 534 and the Byzantine period began. The Sardinian dioceses of the