TreeAlive
‹ Cof Cymru: National Historic Assets of Wales, Wales

Cof Cymru: National Historic Assets of Wales · Wales

Castle Malgwyn Bridge

Manordeifi, Pembrokeshire, Wales

A Grade II listed building in Castell Malgwyn, Manordeifi, Pembrokeshire, designated on 24 November 1994.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Castle Malgwyn Bridge, Manordeifi, Pembrokeshire, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1913), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Designation
Listed building, Grade II
Broad class
Transport
Date of designation
24 November 1994
Date of amendment
10 November 2021
Welsh name
Pont Castell Malgwyn
Locality
Castell Malgwyn
Community
Manordeifi
Unitary authority
Pembrokeshire
Country
Wales
Coordinates
52.06159, -4.60107
Cadw reference
15121

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

5 historical maps cover this location, the earliest the 1608 map "(13) Cambriae Typus." (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 1608 · (13) Cambriae Typus. (David Rumsey Map Collection, Stanford Libraries)
  • 1636 · Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ... (David Rumsey Map Collection, Stanford Libraries)
  • 1637 · Particular description of Wales. Cambria seu Wallia (David Rumsey Map Collection, Stanford Libraries)
  • 1830 · V.3:11-15:XV. Britisches Reich. A. Kon: England. b. Frstenthum Wales: Shire: 37-40 (David Rumsey Map Collection, Stanford Libraries)
  • 1899 · 194 Llangranog (Hills) (David Rumsey Map Collection, Stanford Libraries)

Get directions ↗

This record in Cadw's own full report ↗

Cadw's description

Situated immediately S of Llechryd Bridge and Castle Malgwyn entrance.

Bridge built 1799 for Sir Benjamin Hammet (c1736-1800), owner of the iron and tinplate works at Castle Malgwyn, to cross the now-dry canal that powered the works. The works were begun c.1772 by the Penygored Company. Benjamin Hammet was the son of a barber from Taunton, England. He was employed as a footman when he met and married Louisa Esdaile and became the business partner of his father-in-law the banker Sir James Esdaile. Sir James Esdaile was a co-owner of Rose Hall, a slave plantation in Jamaica producing sugar and rum. It is unclear to what extent Benjamin Hammet was involved in family slave holdings, but his grandsons received compensation for loss of slaves in Trinidad when slavery was abolished. Hammet purchased the tinplate works at Castle Malgwyn in 1791 and set about creating an estate which overlooked the works and was centred upon a house with gardens and pleasure grounds. In 1797 he was elected the Lord Mayor of London but declined to return from Wales to take up the position. He died in Wales in 1800 and the tinplate works were dismantled in 1806.

1799 road bridge over dry canal. Rubble stone with flat slate- coped parapet. A single wide shallow arch with cut stone voussoirs and arch ring. Attached cast-iron keystones E and W with castle crest above and crossed cannons below, the E plaque marked 'Castle Malgwyn Bridge 1799', the W plaque 'Sir Benjn Hammet 1799'.

Scheduled Ancient Monument Pe 383

Listed for special historic interest.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
See your own family's places on a living map