Tigrini Guidi, Count of Modigliano (or Count Palatine in Tuscany?) Constance, married Pietro Ziani, later Doge of Venice Medania Valdrada, married Giacomo Tiepolo, Doge of Venice References Sources Alio, Jacqueline. Queens of Sicily 1061-1266. Trinacria: New York City, 2018. Norwich, John Julius. The Kingdom in the Sun 1130-1194. Longman: London, 1970. Matthew, Donald. The Norman Kingdom of Sicily. Cambridge University Press: 1992. 1153 births 1205 deaths Regents of Sicily People from Acerra Royal consorts of Sicily 12th-century women rulers 12th-century Italian women Italo-Normans Princesses of Taranto Women in medieval European warfare Women in 12th-century warfare Women in war in Italy Queen mothers