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Historic England Research Records

Tonman Ditch

Hob Uid: 361891
Location :
St. Albans
Non Civil Parish
Grid Ref : TL1480006700
Summary : Medieval borough boundary ditch, pre-1142, documented during the 14th and 17th century.
More information : "The bounds of the borough (of St Albans) were first recorded in 1327 although as early as 1142 its limits appear to have been defined by a ditch called Tonmans Dike which can still be traced". (1)

(Course, sited from plan, from TL 144076 - TL 147076 and TL 148067 - 151074). The earliest mention of the ditch as Tonman Ditch occurs in a document of 1327 describing the borough boundary. Tonman Ditch is mentioned again in a similar document of 1635 and is also named on Hare's map of the town of 1634.

The earthen bank associated with Tonman Ditch is still visible along the west side of Upper and Lower Marlborough Road and Keyfield Terrace.

The earthwork is in a very mutilated condition and the ditch must lie under the present roads. Excavations in 1975 at the White Hart Tap (TL 14950689) revealed the profile of the bank, but no secure dating evidence was found. (2)

Sources :
Source Number : 1
Source :
Source details : VCH Herts 2 1908 469
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Source Number : 2
Source :
Source details : Herts Arch 6 1978 35-9 plan illust (C Saunders & A B Havercroft)
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Monument Types:
Monument Period Name : Medieval
Display Date : Medieval
Monument End Date : 1540
Monument Start Date : 1066
Monument Type : Boundary Bank, Boundary Ditch
Evidence : Earthwork, Sub Surface Deposit

Components and Objects:
Related Records from other datasets:
External Cross Reference Source : National Monuments Record Number
External Cross Reference Number : TL 10 NW 14
External Cross Reference Notes :

Related Warden Records :
Related Activities :
Associated Activities :
Activity type : EVALUATION
Start Date : 1994-01-01
End Date : 1994-12-31