Treffos manor of Bishop of Bangor

Has been described as a Possible Palace (Bishop)

There are no visible remains

NameTreffos manor of Bishop of Bangor
Alternative Names
Historic CountryAnglesey
Modern AuthorityAnglesey
1974 AuthorityGwynedd
CommunityCwm Cadnant

Site of the bishop of Bangor's main Anglesey manor, now an isolated farm. (Gwynedd Archaeological Trust HER)

Gatehouse Comments

Mentioned in the Valor Ecclesiasticus reformation survey.

- Philip Davis

Not scheduled

Not Listed

The National Monument Record (Coflein) number(s)
County Historic Environment Record
OS Map Grid ReferenceSH546754
HyperLink HyperLink HyperLink

No photos available. If you can provide pictures please contact Castlefacts

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  • Thompson, M.W., 1998, Medieval bishops' houses in England and Wales (Aldershot: Ashgate Publishing) p. 169
  • Carr, A.D.,1982, Medieval Anglesey (Llangefni)

Primary Sources

  • 1821, Valor Ecclesiasticus (London: G. Eyre and A. Strahan) Vol. 4 p. 415, 420 online copy


  • Payne, Naomi, 2003, The medieval residences of the bishops of Bath and Wells, and Salisbury (PhD Thesis University of Bristol) Appendix B: List of Medieval Bishop's Palaces in England and Wales (available via [])