|Jacques Coeur (1400-56). Brokgauz-Efron says that Coeur was an alchemist
who circulated counterfiet gold and money with King Charles VII (1403-61).
He was accused of poisoning Agnes Sorel (the king's mistress) and of treason,
though he may have been guilty of neither. Several of the criminals in Chapter
23 are falsely accused.
Coeur at the Bourges Page (in French)
There is apparently now a famous restaurant
school named after him!