Years after being partly blinded by smallpox, this leader supposedly (*) plucked out his own eye, earning him the nickname "The One-Eyed Dragon.
This leader funded the construction of the ship San Juan Bautista while advised by the explorer Sebastian Vizcaino, and send the vessel on a diplomatic mission to Rome. When a political rival of this man seized his father and used him as a human shield, this then 18-year-old leader hesitated to give an order for a musket volley, but the rival still cut his dad's throat and fled past the Abukuma river; after that, he mass-slaughtered members of the Ashina clan. Largely sympathetic to Christian missions in his domain, this leader sheltered the proselytizer Luis Sotelo. Years after being partly blinded by smallpox, this leader supposedly (*) plucked out his own eye, earning him the nickname "The One-Eyed Dragon. This leader, known for wearing a helmet with a crescent moon on it, was given lordship over Sendai by Tokugawa Ieyasu, thus placing him in control of Tohoku, or northeastern Japan. For 10 points, name this leader of the Date [dah-tay] clan at the turn of the 17th century.
This leader funded the construction of the ship San Juan Bautista while advised by the explorer Sebastian Vizcaino, and send the vessel on a diplomatic mission to Rome.
Date Masamune [accept Masamune after it is read; prompt on partial answer]