Sanada clan
Hidetada had led 16,000 of his father's men in a campaign to contain the Western-aligned Uesugi clan in Shinano. Ieyasu then ordered Hidetada to march to Sekigahara in anticipation of the decisive battle against the Western faction. But the Sanada clan managed to tie down Hidetada's force, so he arrived too late to assist in his father's narrow but decisive victory. Hidetada and Ieyasu's relationship never recovered. On 3 December 1601, Hidetada's first son, , was born to a young maiden from Kyoto named Onatsu. In September 1602, Chōmaru fell ill and died; his funeral was held at Zōjō-ji temple in Shibe.