The Thetford reference article from the English Wikipedia on 24-Apr-2004
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Thetford

Thetford is a town in the Breckland area of Norfolk, England. In the Anglo-Saxon period, it was the home of the monarchs of East Anglia and was seat of a bishopric.

Much later, the town was the birthplace of Thomas Paine. Today, the surrounding heathland has been largely replaced by the Thetford Forest.