( 1) Ordnance Survey Map (Scale / Date)
OS 6" 1960
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( 2) by Derek Renn 1973 Norman castles in Britain
1973 Page(s)245
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( 3) General reference
Little Guide to Glos 1949 123 (C Cox)
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( 4) General reference
RCHM Ms Notes 18.11.1971
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( 5) edited by N.M. Herbert 1976 A history of the county of Gloucester, volume 11
The Victoria history of the counties of England 1976 Page(s)50
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( 6) Vertical aerial photograph reference number
NMR RAF/CPE/UK/2098 3113-3114 28-MAY-1947
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( 7) Field Investigators Comments
F1 GB 23-SEP-77
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( 8) 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
1 Page(s)182
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(9) Vertical aerial photograph reference number
NMR RAF/CPE/UK/2098 3021-3022 28-MAY-1947
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(10) Vertical aerial photograph reference number
NMR OS/70291 368-369 11-AUG-1970
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