John Jones, often known as Ivon (10 May 1820 - 6 September 1898) was a Welsh radical and man of letters, who played a prominent role in the political life of Cardiganshire and beyond in the late nineteenth century. He was a close acquaintance of the radical preacher Kilsby Jones.
Jones was born in the Mynydd-bach area in upland Cardiganshire, received little formal education.[1] He became a grocer and relatively prosperous tradesman in Aberystwyth where he lived from 1835 until his death.
He actively participated in the religious and literary life of Aberystwyth, before it became a university town. He was the secretary of the National Eisteddfod held at Aberystwyth in 1865, and received a gold medal for his services. He was an active Calvinistic Methodist. In later years, he published material on history and folklore.
In 1865, Ivon was a prominent supporter of David Davies in his unsuccessful campaign in the Cardiganshire constituency.
Ivon died on 6 September 1898 and was buried at Aberystwyth.