Malltraeth Marsh Papers

Scope and Content


  • Copy of report and estimate relating to proposals for draining Malltraeth Marsh in 1787
  • A plan of the allotments of Malltraeth/Cors Ddyga Marsh, 1790
  • A map of the coal works and strata, Anglesey coal basin and allotments on Malltraeth/Cors Ddyga Marsh, no date
  • File of correspondence and papers relating to A Bill to alter, amend and extend the Acts for inclosing, embanking and draining the Marsh called Malltraeth and Cors Ddyga in the county of Anglesey, and to provide for the maintenance of the Embankments and Drainage, 1859
  • Accounts and letters relating to the Malltraeth Marsh Drainage Commissioners, 1859-1918

Administrative / Biographical History

Northwards along the coast from Newborough in Anglesey, north Wales is an estuary formed by the Afon Cefni which flows across the island from a point north of Llangefni. Much of this river flows through a low-lying valley, forming the Malltraeth Marsh/Cors Ddyga. The river flowed without restriction through this area, until 1810 when an embankment was built to exclude the sea's tidal influences. The river was subsequently canalised reclaiming much of the area for agriculture. Many parts of the valley still have a wet meadow environment, and are protected as sites of scientific interest.


Material is arranged in chronological order and incorporated into the General Collection of Bangor Manuscripts .

Conditions Governing Access

Open to all users


Description compiled by Anne Lenaghan, April 2002.

Other Finding Aids

Item level word-processed list is available at the Archives Department of the University of Wales, Bangor. Reference numbers: General Collection of Bangor Manuscripts: 118-118A, 24807, 26941, 32696-32752

Conditions Governing Use

Usual copyright conditions apply. Reprographics are made at the discretion of the Archivist.

Related Material

Also held at the Archives Department of the University of Wales, Bangor is a map accompanying a report relating to the proposed drainage of Malltraeth Marsh in 1787, reference number: Bodorgan Manuscripts: 1583. Also held at the Department is a copy of an Act of Parliament relating to embankment of the marsh in 1790, reference number: General Collection of Bangor Manuscripts: 35317

Additional Information

Original report and estimate relating to proposals for draining Malltraeth Marsh in 1787 is held at Gwynedd Record Office, Caernarfon, reference number: Poole Manuscript 1766

Geographical Names