the trade route connecting the territories of modern Pomeranian and West Pomeranian Voivodeships. This factor led to the construction of a grod, a West Slavic or Lechitic fortified settlement, on an islet in the middle of the river. Surrounded by swamps and mires, the fortress had perfect defence conditions. Archaeological research has shown that the grod was situated on an artificial hill and had a natural moat formed by the branches of the Słupia, and was protected by a palisade. Records confirm that the area of Słupsk was part of the Polish realm during the reign of Mieszko I and in the 11th century. According to several sources, the first historic reference to Słupsk comes from the year 1015 when the king of Poland Boleslaus I the Brave took over the town, incorporating it into the Polish state. In the 12th century, the town became one of the most important castellanies in Pomerania alongside Gdańsk and Świecie. However, several historians stated that the first mention was in two documents dating to 1227, signed by the Pomeranian dukes Wartislaw III and Barnim I and their mothers, confirming the establishment of an abbey in 1224 and donating estates, among them a village "in Stolp minore" or "in parvo Ztolp", respectively, to that abbey. Another document dated to 1180, which mentions a "castellania Slupensis" and would thus be the oldest surviving record, has been identified as a late 13th-century or 14th-century duplicate. The Griffin dukes lost the area to the Samborides during the following years, and the next surviving documents mentioning the area concern donations made by Samboride Swietopelk II, dating to 1236 (two documents) and 1240. In the earlier of the two 1236 documents, a Johann "castellanus de Slupcz" is mentioned as a witness, Schmidt considers this to be the earliest mention of the gard, since a castellany required the existence of a gard. The first surviving record explicitly mentioning the gard is from 1269: it notes a "Christianus, castellanus in castro Stolpis, et Hermannus, capellanus in civitate ante castrum predictum", thus confirming the existence of a fortress ("castrum") with a suburbium ("civitas"). Schmidt further says that the office of a capellanus required a church, which he identifies as Saint Peter's. This church is mentioned by name for the first time in a 1281 document of Samboride Mestwin II, which also mentions Saint Nicolai church and a Saint Mary's chapel in the