[1] He began writing as a young man and, from 1963 onwards, wrote plays to be performed at the Theatr y Gegin in Criccieth, Gwynedd.
Many of his plays contained elements of absurdity and symbolism, leading critics to make connections with the works of Beckett, N.F.
[1] His most famous character, Ifas y Tryc ('Evans the Truck'), was played by Stewart Jones, a Bafta-Cymru winning actor.
In 2002 Theatr Bara Caws presented a programme in tribute to him, and a Wil Sam festival was held at the National Eisteddfod in Maldwyn in 2003.
Jones's last work was a Welsh translation and adaptation of The Weir by Conor McPherson which was performed by Cardiff-based company Sherman Cymru in 2009.