History of the Republic of Venice of the Sea" ceremony was established in this period. Orseolo died in 1008. Venice's control over the Adriatic was strengthened by an expedition by Pietro's son Ottone in 1017, by which time Venice had assumed a key role in balancing power between the Byzantine and Holy Roman Empires. During the long Investiture Controversy, an 11th-century dispute between Henry IV, Holy Roman Emperor and Pope Gregory VII over who would control appointments of church officials, Venice remained neutral, and this caused some attrition of support from the Popes. Doge Domenico Selvo intervened in the war between the Normans of Apulia and
Gulf of Kyparissia Gulf of Kyparissia The Gulf of Kyparissia (, "Kyparissiakos Kolpos") is a long, curving indentation along the western coast of the Peloponnese peninsula, Greece. It lies between Cape Katakolo at the north end and Cape Konello to the south. Near the northern extreme is the city of Pyrgos, with the town of Zacharo near the center and the town of Kyparissia lying toward the southern end. Flowing into the gulf are the Alpheios and Neda rivers. Its southern part is also one of the main breeding grounds of the endangered loggerhead sea turtle. During the Middle Ages and up to