Criminal biography
The genre of criminal biography, whilst particularly well known in England, is rare to say the least in eighteenth-century Wales. Miss Eiluned Rees,formerly of the National Library of Wales, editor of the definitive bibliography of pre-1820 Welsh printed works, Libri Walliae, informs me that there are only about half a dozen brief biographies of convicted Welsh criminals prior to that date. Probably the most comparable work is A Circumstantial Account of the Evidence produced On the Trial Of Lewis Lewis the Younger, For the MURDER of Thomas Price, late of Pen-y-Graig in the Parish of Llanafan-Fawr in the County of Brecon (1789). The most publicised criminal biographies in eighteenth-century England are the Ordinary (i.e. chaplain) of Newgate's Accounts. See P. Linebaugh, 'The Ordinary of Newgate and his Account', in J. S. Cockburn, ed., Crime in England 1550-1800 (London, 1979), 236-69.
This rarity in itself makes the autobiography extremely valuable. What makes it even more valuable, perhaps without parallel, is the fact that it contains a transcript of Owen's trial for murder at the Carmarthenshire Spring Great Sessions held in April 1747. The transcript is the only original source for Owen's trial since the gaol files of the Carmarthen Court of Great Sessions for 1743-9 are missing. I know of no other transcripts of eighteenth-century Welsh criminal trials and this particular transcript is precious evidence for court procedure in criminal trials in the Court of Great Sessions. Court procedure in the trials of criminals in the Court of Great Sessions - judging from the transcripts of Owen's trial - is very similar to the practice of English Assize Courts as described by J. H. Baker in 'Criminal Courts and Procedure at Common Law 1550-1800' in J. S. Cockburn, op. cit., 15-48. A significant difference was the need for interpreters in Wales.