St. Michael), and beyond that a settlement which would become known as Komandoria (after the commander of the Knights Hospitallers, to whom the church was granted in 1187). The main arena of development, though, was the left bank. In about 1249, Duke Przemysł I began constructing a residence and castle on what is now called Przemysł Hill – this would become the Royal Castle. Przemysł also acquired the settlement of St. Gotard from the bishopric, in exchange for that of St. Adalbert, with the intention of founding a town there. In 1253 a charter was given by Przemysł (and his brother Bolesław the Pious) for the founding of a town under Magdeburg law. The charter was issued to Thomas of Gubin, who in the following years brought many German settlers to aid in the building. This city covered the area of Poznań's present-day Old Town neighbourhood, centred on the Market Square (now Stary Rynek). Under Duke Przemysł II, the castle was strengthened and the new city surrounded with a wall, integrated with the castle (which stood at the eastern end of the town). Przemysł II was crowned king of Poland in 1295, and thus the castle became a royal residence. However, after the king's murder in Rogoźno the following year, the conflict and instability resumed. In 1314 Poznań finally came under the control of Władysław I the Elbow-high, who was crowned king of a reunited Poland in 1320, bringing the period of fragmentation to an end. In Poland and the Commonwealth (1320–1793) In the reunited Poland (and later in the Polish–Lithuanian Commonwealth) Poznań became the seat of a voivodeship, although within the Greater Poland region Kalisz was initially of greater importance, lying on the route from Silesia to Toruń and Gdańsk. In 1331 Poznań withstood a siege by forces of John of Bohemia. With the start of the Jagiellonian period Poznań began to grow in importance, as it lay on the trading route from Lithuania and Ruthenia to western Europe. King Władysław II Jagiełło granted and confirmed numerous privileges on the city, which continued to grow in importance under his successors. Most of the surrounding settlements on the left-bank of the Warta belonged to the city, while the cathedral island (Ostrów Tumski) and the right bank formed the bishop's possessions. Separate town rights were bestowed on Ostrów Tumski sometime before 1335, Śródka in 1425 (its western end, Ostrówek, would form