The history of King's Lynn is rooted in the early Middle Ages. The town was founded at the beginning of the 12th century (around 1101) by the first Bishop of Norwich, Herbert de Losinga. Originally, the settlement was named Bishop’s Lynn, which translates to the "Bishop’s pool" or "marsh." St Margaret's Church, built by the Bishop’s decree to foster trade and spiritual life in the region, became the center of the emerging town.
The transformation of a small settlement into a thriving town was due to a successful combination of geographical and political factors:
- Strategic Location: The town is situated at the mouth of the River Great Ouse, flowing into the Wash. This provided direct access to the North Sea and made it an ideal transshipment base for goods headed into the heart of England.
- Hanseatic League: King's Lynn became one of the key English ports collaborating with the Hanseatic League—a powerful trading confederation of Northern Europe. A "Steelyard" (trading post) for Hanseatic merchants was located here.
- Royal Patronage: In 1204, King John granted the town a Royal Charter, giving local guilds extensive rights and freedoms, which accelerated economic growth.
In the 13th and 14th centuries, King's Lynn was considered one of England's wealthiest towns, second in importance only to London and Southampton. The economy was based on the export of English wool and grain, as well as the import of timber, wine, fish, and furs from the Baltic countries and Scandinavia.
Bustling trade led to a unique urban planning feature: two market squares were formed—the Saturday Market Place and the later Tuesday Market Place—both of which still function today. The town received its modern name in 1537 when King Henry VIII incorporated it into the royal estates.