Databases and websites chock-full of criminal records and court proceedings from the United Kingdom to keep you hot on your ancestors' trail.
If your convict ancestor was a British citizen, a wealth of resources awaits you. These include the proceedings of the Old Bailey
, 1674 to 1913, covering nearly 200,000 trials in London’s central criminal court.
The UK National Archives
catalog lists a collection of petitions for clemency, wherein might be a letter your ancestor wrote to the judge; its online collection includes Victorian prisoners photos