Sasaki Kojirō, Japanese samurai (born 1585)

Sasaki Kojirō , also known by his fighting name Ganryū Kojirō, was a celebrated Japanese swordsman of the late Azuchi–Momoyama and early Edo periods. Born in Fukui Prefecture, he founded the Ganryū school of swordsmanship, specializing in a distinctive long-sword technique most notably the famed Tsubame Gaeshi. He earned renown across Japan for his flamboyant style and formidable skill, reportedly serving as sword instructor to Hosokawa Tadaoki’s court.