During the Osaka no Jin (The Siege of Osaka), Okogo no Tsubone committed suicide (at the age of 36) together with Lord Hideyori and Lady Yodo inside the food storehouse in the gardening quarter of the (Osaka) castle.
大坂の陣では山里曲輪の糒蔵にて秀頼・淀殿と共に命運を共にした（36歳）。