Siege of Kaminogō Castle

The siege of Kaminogō Castle was a battle in 1562, during the Sengoku period (16th century) of Japan. Kaminogō Castle was an Imagawa clan outpost located in eastern Aichi Prefecture, in what is now the town of Gamagōri.

Siege of Kaminogō Castle
Part of Tokugawa Ieyasu's revolt against Imagawa
Result Matsudaira victory
Matsudaira forces Imagawa forces
Commanders and leaders
Matsudaira Motoyasu
Hattori Hanzō
Ishikawa Kazumasa
Udono Nagateru

With the help of his ninja vassal Hattori Hanzō, Matsudaira Motoyasu (later known as Tokugawa Ieyasu) laid siege to and stormed the castle. The Matsudaira force captured the castle from Udono Nagateru, a general of the Imagawa. Hanzo saving the daughters of Tokugawa Ieyasu from the Kaminogo castle with a small group of ninja and also capturing many high ranking members of Imagawa clan.

Motoyasu order Ishikawa Kazumasa as guardian of the Imagawa family, when Ieyasu managed to convince Imagawa Ujizane to release his family. Motoyasu obtained many useful hostages to use against the Imagawa, who were then in possession of his own family.


  • The Samurai Sourcebook
  • Turnbull: Ninja AD 1460–1650, p44.