Background
Tomooki Uesugi was born in 1488 in Japan. Tomooki Uesugi was the son of Uesugi Tomoyoshi, who was among the first to oppose the Hojo's rise to power. Tomooki was of the Ogigayatsu branch of the Uesugi family, not the more famous and powerful Yamanouchi branch to which Uesugi Kenshin belonged.
Career
In 1524, Tomooki attempted to take the initiative in defending Edo Castle by marching his troops out to meet the Hojo army in battle. However, his opponent circled around behind the sallying force, taking the castle with the help of Ota Suketada, the castle keeper who betrayed the Uesugi to the Hojo. Tomooki also took part in the siege of Arai in 1518, and in the battle of Ozawahara in 1530.