[2] He lived at the family estate of Blaenôs, Llandovery and had a townhouse in St James's, London.
[4] In 1868, John's elder brother David Jones, one of two members of parliament for the County of Carmarthenshire, announced that he was retiring due to ill-health.
[5] At the general election of that year he was defeated by a Liberal party candidate, Walter Powell.
[6] Towards the end of his life, Jones was said to have aged suddenly, although he continued to walk back and forth on a daily basis to the town of Llandovery, around a mile and a half from his home.
He had done so on the day of his death but, shortly after his return, he died suddenly having collapsed in a field while watching some men ploughing.