In Venice, the work of guardians in prisons was considered profitable and therefore particularly sought by citizens outside the aristocratic class – the jobs pertaining to the aristocracy were other and specified by law.
What motivated for such a profession was not so much the wages, but the money paid by the prisoners to have more food, water, go out more often, or more simply, be treated better.
As is well known, the work of the guardian consists in stopping the clashes or riots on the part of the prisoners but above all in stopping escapes or escapes, yet it is ascertained that from this prison there have been not only individual but also group escapes. However, a look at the solidity of the walls and the railings shows how that could not be the most suitable way to escape, and therefore those who succeeded have resorted to the only possible method, that is to pay the guardians.