The Welsh lyrics were written by John Ceiriog Hughes (shown above). It has been translated into several languages, including English. Hughes (25 September 1832 - 23 April 1887), was a Welsh poet and well-known collector of Welsh folk tunes. Sometimes referred to as the 'Robert Burns of Wales'. Ceiriog was born at Penybryn farm overlooking the village of Llanarmon Dyffryn Ceiriog, in the Ceiriog Valley, which was then in Denbighshire in north-east Wales. He worked as a railway clerk in Manchester and London. He was employed as a station master at Caersws railway station station from 1868.

Through his desire to restore simplicity of diction and emotional sincerity, he did for Welsh poetry what Wordsworth and Coleridge did for English poetry. He became famous winning a serious of prizes for his poems in the 1850s. His first collection of poetry was published in 1860 and is called Oriau'r Hwyr (“Evening Hours”). As well as writing poetry he wrote many light hearted lyrics which he adapted to old Welsh tunes, or the original music of various composers. Many of his songs were written to folk airs. Ceiriog Hughes' song lyrics include Dafydd y Garreg Wen ("David of the White Rock"). He also wrote the Welsh words to the song, "God Bless the Prince of Wales" and to the Charles Dibden song, "The Bells of Aberdovey", which he translated as "Clychau Aberdyfi".

His fascination with Welsh folk music led to an investigation of the history of the music and particularly the harpists who would often accompany then. This led to a grand project to publish four volumes of Welsh airs, of which only the first volume actually made it to press in 1863: Cant O Ganeuon ("A Hundred Songs").  Like many Welsh poets, he took a bardic name - "Ceiriog" - from the River Ceiriog, which flows through the Ceiriog Valley, where he was born. In his home village, the public library contains a memorial inscription to him.

The song is included in Fantasia on British Sea Songs at the Last Night of the Proms, representing Wales.