( 1) Ordnance Survey Map (Scale / Date)
OS 6" 1955
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( 2) Royal Commission on Historical Monuments (England) 1916 An inventory of the historical monuments in Essex. Volume I [north west]
Page(s)41
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( 3) Field Investigators Comments
F1 PAS 25-APR-75
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(4) by David J Cathcart King 1983 Castellarium anglicanum : an index and bibliography of the castles in England, Wales and the islands. Volume I : Anglesey - Montgomery
Page(s)143
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