A new book has debunked popular myths about Wisbech Castle's historic beginnings.

This comes as part of the 15th book by local historian Kevin Rodgers.

Launched at Wisbech Museum, the book explores the true origins of the historic landmark, debunking long-standing legends that had previously been accepted.

In the book, Rodgers reveals a very different story than what was previously believed, revolving around the mansion located in the central part of town, known as the Castle.

He debunks myths of the castle being built at the command of William the Conqueror – a myth that had been widely accepted due to the lack of any visual record of the original castle.

New historian book debunks myths about Wisbech Castle's history New historian book debunks myths about Wisbech Castle's history (Image: Submitted)

Rodgers explained his logic stating: “If it was built in William's lifetime it could only have been an embanked moat with a wooden stockade at the centre built at the first crossing of the Welle Stream and river Ouse from the sea."

According to the historian, the castle was strengthened and reshaped with stone over the years, even hosting several English kings, including King John.

Throughout 950 years, four new buildings have risen on the original site of the castle, the final transformation seeing it emerge as a Regency villa in the 1820s.

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Kevin says: “Many locals have never been in the castle and many more wouldn't recognise it as such.

"The one thing all can see is our magnificent Crescent, the brainchild of Joseph Medworth, a great Wisbech character.

"Few towns the size of Wisbech can boast such a splendid architectural treasure.”

Rodgers' book The Castle at Wisbech aims to separate reality from myth and is available for purchase at the Museum's shop from 10am-4pm, Wednesday to Saturday.

Proceeds from the book will directly be going to the Wisbech and Fenland Museum.