Monument record 0042700000 - ABOUT 350YDS N OF CHURCH
Summary
Protected Status/Designation
- Archaeological Notification Area: Earthworks of Medieval moat (DBC8932)
- SHINE: Grendon Underwood medieval moated site and ridge and furrow earthworks (DBC7471)
Map
Type and Period (1)
- MOAT (Medieval - 1066 AD to 1539 AD)
Description
Plan Form - TRAPEZOIDAL
HOMESTEAD MOAT, BY ROADSIDE (B1).
WATERFILLED MOAT ON FLOOR OF A SHALLOW VALLEY. INTERIOR C.50M NE/SW X 26-33M NW/SE & 0.16HA. MODERN CAUSEWAY ACROSS DITCH. DITCH IS 6M WIDE ON NW, 10M ON NE, 6-10M WIDE ON SW WHERE THERE IS AN UNSURVEYABLE OUTER BANK 9M WIDE, 0.2M HIGH. 5M EXTENSION SW TO NW ARM (B2-3).
SP 67782126 Moat (NR) (B4).
Published 25" survey revised (B5)
A water filled trapezoidal homestead moat, situated on the floor of a shallow valley. The interior, on average 50.0m NE-SW by 26.0m to 33.0m NW-SE and of 0.16 ha, forms a level platform, now allotment gardens, about 0.3m above the natural ground surface.
The causeway across the surrounding ditch is modern. The ditch is 6.0m wide on the NW, 10.0m wide on the NE, and 6.0m to 10.0m wide on the SW, where there is an unsurveyable outer bank, about 9.0m wide and 0.2m high.
The SE arm is stepped on the inside; being 6.0m wide in the SW half and 12.0m wide in the NE, where it is embanked by a broad flat topped bank, about 6.0m wide and 0.8m high. There is a 5.0m extension SW, to the NW arm.
The water level, lowered by a modern ditch in the N angle, is 0.8m below the platform and about 0.6m deep. It is presumably fed by surface drainage, since the water level in the adjacent stream is 1.5m lower, and there is no evidence to suggest that it was used.
No change to revised 25" survey (B6).
NRHE Insert 1998 (B7).
Sources (8)
- ---SBC17444 Aerial Photograph: 02/02/94. BCM A20/8/25-28,30. SP\676211. Yes.
- <1>SBC20467 Bibliographic reference: Royal Commision on Historical Monuments. 1913. Historical Monuments in Buckinghamshire. Volume 2. p131.
- <2>SBC5311 Bibliographic reference: 1971. M E FARLEY, FIELD VISIT DEC 1971.
- <3>XYSBC11332 Bibliographic reference: Ordnance Survey Field Investigator. 1977. OS RECORD CARD, MARCH 1977. [Mapped feature: #580 ]
- <4>SBC28494 Map: Ordnance Survey. 1958. OS 6" 1958.
- <5>SBC28492 Verbal communication: Bernard Harley Seaman. 1973. Field Investigators Comments - F1 BHS 18-JUL-73.
- <6>SBC28647 Verbal communication: Christopher Paul Chaplin. 1977. Field Investigators Comments - F2 CC 04-MAR-77.
- <7>SBC27441 Digital archive: Historic England. National Record of the Historic Environment (NRHE).
Location
| Grid reference | Centred SP 67784 21263 (79m by 90m) (2 map features) |
|---|---|
| Civil Parish | GRENDON UNDERWOOD, Aylesbury Vale, Buckinghamshire |
Finds (0)
Related Monuments/Buildings (0)
Related Events/Activities (1)
- Event - Survey: Topographic earthwork survey (EBC17895)
Record last edited
Dec 15 2025 11:24AM