The city of Ulvila was built on the place, where those days situated a powerful village which has almost dissapeared nowadays (only the Church building survived). The village was located on the banks of the river Vanhakylänjoki (today it is caled Päkkioja), on the place, where it joined the river Kokemäenjoki. Originally this area had a Swedish name Ulfsby, in Finnish – Susikylä (Wolf's Village). Later it was translated into Finnish as Ulvila. The village grew up, thanks to the safe harbor, along the banks of the river Vanhankyläjoki. The open sea, Lattomeri (nowadays there is a field) was so close, so that even large ships from the Baltic Sea could freely moor in the port of river Vanhakylänjoki.