Why did the medieval mink have a name?

According to official website, a cool knowledge network, this is a service of Japanese marten merchants in the Middle Ages. After buying clothes, you can engrave your name. There will be good shirts and suits, and high-end clothes will be engraved with your name for free. Medieval mink: about 10-20 years old, not belonging to modern mink. Most of them are made by craftsmen, and the brands are mixed. The preserved products (recent products) are already top-notch in the old and new.