In the 8th century a Slavicgród existed in present-day Kalisz Pomorski.[1] In the Middle Ages it was part of Poland, located in northern Greater Poland. The town's name derives from the city of Kalisz in southern Greater Poland.[1] In order to develop this sparsely populated area, duke Przemysł I brought settlers from Kalisz to the settlement, which was newly named in Latin Nova Calisia (meaning New Kalisz).[1]