This gourd, dated 1793, was originally used to store gunpowder but may also have contained something much spookier. Carved into its surface are the words,"Maximilien Bourdaloue on January 21st, dipped his handkerchief in the blood of Louis XVI after his beheading."
It was not unusual in those days for people to dip their hankies in blood on the scaffold to keep as a ghoulish souvenir. This particular bloody handkerchief is no longer inside the gourd but dried blood residue remained and was subjected to DNA testing which established a connection to French King Louis XVI.Link
- Via Uncertain Times