The Matsudaira were defeated by the Imagawa clan in 1549 , and Ieyasu was taken to Sunpu Castle as a hostage .
His famous grandson Matsudaira Motoyasu ( later named Tokugawa Ieyasu ) was born here on December 16 , 1542 .
The Matsudaira were defeated by the Imagawa clan in 1549 , and Matsudaira Motoyasu was taken to Sunpu Castle as a hostage .
His famous grandson Matsudaira Motoyasu ( later named Tokugawa Ieyasu ) was born here on December 16 , 1542 .