The Honourable Society of Cymmrodorion (or Anrhydeddus Gymdeithas y Cymmrodorion) was founded in 1751 as a literary society devoted to the preservation of the Welsh language. It was founded by two brothers, Lewis Morris and Richard Morris, natives of Anglesey. The society has always been notably apolitical, which meant it had more in common with its equivalents in Scotland, than with those in Ireland. The society was originally based in London, and remains so to this day. It has its own publications, and holds lectures, all of which concern the native culture, language and literature of the Welsh.
It published the journals Y Cymmrodor (1823-1843, 1877-1951), Transactions of the Honourable Society of Cymmrodorion (1897-present), and individual volumes relating to historical sources. The journals are being digitized by the Welsh Journals Online project at the National Library of Wales.
The Society postal address is as follows: Cymmrodorion, PO Box 55178, London, N12 2AY.
The Society is mentioned by Robert Graves in his autobiograhy "Goodbye To All That". He visited the Society whilst on leave from the Western Front in April 1916 to hear W. M. Hughes, the Australian Prime Minister, and Lloyd George, the Secretary of War speak of whom he wrote - "The power of his rhetoric amazed me."