The prison regime may appear brutal to a modern visitor, but in its day it was seen as humane improvement on earlier gaols.

Even so, methods of keeping criminals in check included chains, whippings and isolation in a dark cell for up to three days.

The treadmill at Beaumaris is unusual in that it pumped water to the top of the building for use in the cells, meaning that the prisoners were not forced to work for no reason.

Both men were buried within the walls of the gaol in a lime pit, but the exact location of their burial is unknown.

The iron pins which held the gallows in place, along with the two doors which the condemned man passed through, can still be seen from the street outside the gaol walls.