John Jones of Ystrad

John Jones "of Ystrad" (1777–1842), was a Welsh politician, MP for Carmarthen from 1821 to 1832.

He was born on 15 September 1777 in King Street, Carmarthen, the son of Thomas Jones, a solicitor of Job's Wells and Capel Dewi, Carmarthen and of Anna Maria, daughter of John Jones of Crynfryn, Cardiganshire. Jones was educated at Eton College and Christ Church, Oxford, he went on to Lincoln's Inn to qualify as a barrister. His work on the South Wales circuit took him back to his home area.