What is "senhime"

(May 26, 1597 – March 11, 1666) was the eldest daughter of the shogun Tokugawa Hidetada and his wife Oeyo. She was born during the Warring-States period of Japanese history. Her paternal grandfather was the founder of the Tokugawa shogunate, Tokugawa Ieyasu; her maternal grandfather was Azai Nagamasa; her grandmother was Oichi, whose brother was Oda Nobunaga. When she was six or seven, her grandfather married her off to Toyotomi Hideyori, who was the son of Toyotomi Hideyoshi.