Cheating the boss in the 13th century!

de bene esse: literally, of well-being, morally acceptable but subject to future validation or exception

http://www.medievalists.net/2014/02/26/defraud-lord-medieval-manor/

How to defraud your lord on the medieval manor - Medievalists.net

medievalists.net

Here are six ways to commit fraud explained by Robert Carpenter in the 13th century.