Siege of Osaka
1614-1615 series of battles undertaken by the Tokugawa shogunate against the Toyotomi clan
The siege of Osaka (大坂の役, Ōsaka no Eki; or, more commonly, 大坂の陣 Ōsaka no Jin) was a series of battles undertaken by the Japanese Tokugawa shogunate against the Toyotomi clan, ending in that clan's destruction. Divided into two stages, the winter campaign and the summer campaign, it lasted from 1614 to 1615. The siege put an end to the last major armed opposition to the establishment of the Tokugawa shogunate. The end of the conflict is sometimes called the Genna Armistice (元和偃武, Genna Enbu), because the era name was changed from Keichō to Genna immediately following the siege.
Background
When Toyotomi Hideyoshi died in 1598, Japan came to be governed by the Council of Five Elders, among whom Tokugawa Ieyasu possessed the most authority. After defeating Ishida Mitsunari in the Battle of Sekigahara in 1600, Ieyasu essentially seized control of Japan for himself and abolished the council. In 1603, the Tokugawa shogunate was established with its capital at Edo. Hideyoshi's son Toyotomi Hideyori and his mother Yodo-dono were allowed to stay at Osaka Castle, a fortress that had served as Hideyoshi's residence. Hideyori remained confined to the castle for several years. In addition, as a mechanism of control, it was agreed that in the year 1603 he would marry the daughter of Tokugawa Hidetada, Senhime, who was related to both clans.
“Siege of Osaka” enters the record as 1614-1615 series of battles undertaken by the Tokugawa shogunate against the Toyotomi clan. Crown Archives preserves that source wording while asking what Siege, Osaka and 1614-1615 can confirm, complicate or overturn.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Aug 22, 2026. The linked authority identifier is Q475780. The Library of Congress control number is sh85095875. Authority coordinates are 34.640, 135.520. 2 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1614, 1615, 1598 and 1600.
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This entry incorporates text from “Siege of Osaka” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.