the rest of the peninsula. From Nauplia William and Geoffrey of Villehardouin made their way north to Corinth, and thence along the coast of the gulf to Patras, where they took the city and the castle too. They continued down the coast to Andravida, where the local archons and the populace came out to meet them, priests carrying the cross and icons. The Greeks made obeisance to William as their new ruler. The fall of Andravida also meant the easy occupation of Elis. Wherever William met no resistance, he recognized the rights of the Greeks to their lands, customs, and privileges. The conquerors met their first serious obstacle at the coastal fortress of Arcadia (modern Kyparissia), which they were not prepared to take. The crusaders continued to Modon (now Methoni, Greece), but the natives of Nikli, Veligosti, and Sparta, together with some of the Melingoi Slavs of Mount Taygetus and the mountaineers of Maina, formed an army in order to oppose their advance. The resistance was soon joined by a certain Michael who is identified by most scholars by Michael I Komnenos Doukas, who had made himself ruler of Epirus (1205–1215). William quickly fortified Modon and prepared to meet the Greeks. The battle which decided the future of Achaea was fought in an olive grove called Koundoura in the summer of 1205. Here the well-armed and well-disciplined crusaders won an overwhelming victory over the much more numerous Greek forces. Michael fled from the battle-field and William in short time occupied Coron (now Koroni, Greece), Kalamata and Kyparissia. Although the peninsula had not been entirely overrun—for example Leo Sgouros still held out in Acrocorinth, Argos, and Nauplia—by the fall of 1205 William had assumed the title of Prince of Achaea. The name was derived from the region of Achaea in the northwestern part of the peninsula, one of the first regions the crusaders had subdued. The Achaea in the prince's title, however, was to refer to the whole Peloponnese. On November 19, 1205, Pope Innocent III, in a letter to Thomas Morosini, the new Latin Patriarch of Constantinople, referred to William as princeps totius Achaiae provinciae (‘prince of all Achaea province’). However, the Venetians, in order to secure control of the key ports between Italy and Constantinople, demanded that their rights granted to them by the partition treaty of 1204 be recognized. Early in 1206 they occupied Modon and Coron, expelling