• Pietro di Vico (died 1268); an ally of
King Manfred of Sicily, captured the castles and territories of San Giovenale (granted by the commune of Viterbo), Martignano, Stracciacappe, and Trevignano. Defeat by the lords of Bisenzio when attempting to acquire the castle of Marta. During this time the Prefetti di Vico were involved in the
Ghibelline party, supporting in
Rome and
Ottaviano degli Ubaldini in
Florence. The Preffeti di Vico came into conflict with the pope over disagreements over returning the title of Prefect and certain castles, leading to an excommunication from the Pope who proclaimed a crusade. After several battles and sieges with papal forces, Pietro captured Bisenzio, compelling
Pope Urban IV to move from
Orvieto to
Perugia, during which he died. He may have commanded Manfred's army in a failed attack on Rome on 30 March 1265, defeated at
Janiculum Hill. After attempting to arrest
Charles of Anjou, the Prefetti defected to his side and made several concessions to him when he entered Rome in May. During
Conradin's failed bid for Sicily, Pietro supported Conradin and was wounded in the
battle of Tagliacozzo in 1268 and later died that year. Remembered by King Manfred and contemporary historian
Saba Malaspina with the title of
proconsul romanorum. •
Giovanni di Vico (died 1366);
Ghibelline lord of several cities and communes in northern
Lazio and
Umbria. Fought in several conflicts with senator of Rome
Cola di Rienzo and later the
Papal States until his death. Most famous member of the family. ==References==