History of Japan
Yaita Kinbee Kiyosada, the Japanese blacksmith who was ordered to copy and reverse engineer Portuguese matchlock muskets could not make the screw properly himself and had to give a his 16-year-old daughter Wakasa in marriage to a Portuguese in exchange for the Portuguese teaching him to build the muskets. Today Japanese in Tageshima regard Wakasa as a heroine for giving herself to a Portuguese man in exchange for teaching how to screw the end of the musket barrel and a statue was built in her honour as well as candy, restaurants and boast named after her.