Hosokawa Gracia was a Japanese noblewoman during the Sengoku period, born into the Akechi clan. After converting to Catholicism and receiving the baptismal name Gracia, she became a significant figure in the history of Japanese Christianity. During the Battle of Sekigahara in 1600, she was targeted by Ishida Mitsunari, who intended to use her as a hostage to influence her husband, Hosokawa Tadaoki. Refusing to commit suicide due to her religious convictions, she met her end during a violent confrontation at her residence, an event that deeply impacted the political landscape of the era.