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
History of Sardinia the Abealzu-Filigosa and Monte Claro culture of the Chalcolithic period, developed in the island contemporaneously with the appearance of the megalithic phenomenon. The dolmens culture, around the end of the 3rd millennium BC, passed with other typical material aspects of Western Europe (e.g. Bell Beaker) through by the Sardinian coast even in Sicily. Prehistoric and Pre-nuragic monuments and constructions that characterise the Sardinian landscapes are the Domus de Janas (), the menhir and Statue menhir and the dolmens. Archeological cultures of Sardinia in the pre-Nuragic period: Bronze Age Sardinia is characterised by stone structures called nuraghes, of which there are