King's Lynn, originally known as `Lin', is thought to have derived its name from the Celtic word for a lake or pool. It is recorded that a large tidal lake originally covered this area.
In 1101 Bishop Herbert de Losinga of Thetford began the first medieval town between the Purfleet River and MillfleetRiver, by building St Margaret's Church and authorising a market. Quite quickly a small prosperous town grew up and in 1204, following a charter from Bishop John de Grey of Norwich; the town became Bishop's Lynn (Lenne Episcopi).
Trade built up along the waterways that stretched inland from Lynn, and the town expanded and quickly filled the space between the two rivers, Millfleet to the south and Purfleet to the north.
By the late 12th century, a further period of expansion began, more deliberately planned than the first, with wider straighter streets and a much larger market place - this is the second Medieval town between the Purfleet and Gaywood River or Fisher Fleet.






