provinces, from which Pomerelia was separated by large stretches of woodlands and swamps.

The Piasts introduced Christianity to pagan Pomerelia, though it is disputed to what extent the conversion materialized. In the eleventh century the region had loosened its close connections with the kingdom of Poland and subsequently for some years formed an independent duchy. Most scholars suggest that Pomerelia was still part of Poland during the reign of king Boleslaw I of Poland