The National Library of Wales website offers the Crime and Punishment database comprises data about crimes, criminals and punishments included in the gaol files of the Court of Great Sessions in Wales from 1730 until its abolition in 1830. The Court could try all types of crimes, from petty thefts to high treason. In practice, most of the petty crimes were heard at the Courts of Quarter Sessions, whose records are held by the Welsh county record offices. Details about these records can be searched at Archives Network Wales. The records of the Court of Great Sessions do not include cases tried in Monmouthshire since that county formed part of the Oxford Assize circuit, whose records are held by the National Archives. There are, however, a number of cases of Monmouthshire interest on this database.