16 January - Frost, Williams and Jones are all found guilty of high treason for their part in the Chartist riots,[25] and are sentenced to death - the last time the sentence of hanging, drawing and quartering is passed in the United Kingdom, although following a nationwide petitioning campaign and, extraordinarily, direct lobbying of the Home Secretary by the Lord Chief Justice, it is commuted to transportation for life (and Frost is much later pardoned).
5 June - Joseph Brown is appointed Vicar Apostolic of the Roman Catholic District of Wales, being consecrated as a bishop on 28 October.
8 October - Taff Vale Railway is officially opened, the first steam-worked passenger railway in Wales, running from Cardiff docks to Navigation House at Abercynon via the Cardiff station known in modern days as Queen Street.[26][27] Public service begins the following day.
^Edward Breese (1873). Kalendars of Gwynedd; or, Chronological lists of lords-lieutenant [&c.] ... for the counties of Anglesey, Caernarvon, and Merioneth. p. 24.
^ abcJ.C. Sainty (1979). List of Lieutenants of Counties of England and Wales 1660-1974. London: Swift Printers (Sales) Ltd.
^Nicholas, Thomas (1991). Annals and antiquities of the counties and county families of Wales. Baltimore: Genealogical Pub. Co. p. 695. ISBN9780806313146.
^Cylchgrawn Hanes Cymru. University of Wales Press. 1992. p. 169.
^Edwin Poole (1886). The Illustrated History and Biography of Brecknockshire from the Earliest Times to the Present Day: Containing the General History, Antiquities, Sepulchral Monuments and Inscriptions. Edwin Poole. p. 378.
^Edward Breese (1873). Kalendars of Gwynedd; or, Chronological lists of lords-lieutenant [&c.] ... for the counties of Anglesey, Caernarvon, and Merioneth. p. 26.
^"not known". Old Wales: Monthly Magazine of Antiquities for Wales and the Borders. 3. "Old Wales" Office: 106. 1907.
^Nicholas, Thomas (1991). Annals and antiquities of the counties and county families of Wales. Baltimore: Genealogical Pub. Co. p. 612. ISBN9780806313146.
^Edward Breese (1873). Kalendars of Gwynedd; or, Chronological lists of lords-lieutenant [&c.] ... for the counties of Anglesey, Caernarvon, and Merioneth. p. 29.
^Amy Audrey Locke (1916). The Hanbury Family. Arthur L. Humphreys. p. 147.
^Jonathan Williams (1859). The History of Radnorshire. R. Mason. p. 115.
^William Stockdale (1833). Stockdale's Peerage of the United Kingdom. p. 86.
^Fryde, E. B. (1996). Handbook of British chronology. Cambridge England: New York Cambridge University Press. p. 292. ISBN9780521563505.
^Thomas Duffus Hardy (1854). Fasti Ecclesiae Anglicanae: Or A Calendar of the Principal Ecclesiastical Dignitaries in England and Wales... University Press. p. 305.
^ abcThomas Duffus Hardy (1854). Fasti Ecclesiae Anglicanae: Or A Calendar of the Principal Ecclesiastical Dignitaries in England and Wales... University Press. p. 307.