Hojo Sadaaki (北 条 貞 貞; 1278 - 4 July 1333) of the Hojo clan was the fifteenth shaking (regent) of the Japanese Kamakura shogunate and lasted a short time in 1326. He was the twelfth rensho (assistant of shaking) from 1315 until 1326. He was the thirteenth Kitakata Rokuhara tandai (Main Interior Security in Kyoto) from 1311 until his entry as Rensho in 1314. He was the eighth Minamikata Rokuhara tandai (Lower Head Domestic Security) Kioto) from 1302 to 1308.
The real power during the reign of Sadaaki was held by Tokuso (head of the Hojo clan), Hojo Takatoki, who ruled from 1311 to 1333.
Sadaaki would be one of the leaders of the Hojo clan during the Siege of Kamakura (1333). The Hojo lost this battle, which would mean the end of the power of the Hojo clan.
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