Sunpu Castle
Tokugawa Hidetada was born to Tokugawa Ieyasu and the Lady Saigō on May 2, 1581. This was shortly before Lady Tsukiyama, Ieyasu's official wife, and their son Tokugawa Nobuyasu were executed on suspicion of plotting to assassinate Oda Nobunaga, who was Nobuyasu's father-in-law and Ieyasu's ally. By killing his wife and son, Ieyasu declared his loyalty to Nobunaga. In 1589, Hidetada's mother fell ill, her health rapidly deteriorated, and she died at Sunpu Castle. Later Hidetada with his brother, Matsudaira Tadayoshi, was raised by Achaa no Tsubone, one of Ieyasu's concubines. His childhood name was , later becoming .