Ashikaga Yoshimasa

Ashikaga Yoshimasa (足利 義政^?, January 20, 1436 – January 27, 1490) was the 8th shogun of the Ashikaga shogunate who reigned from 1449 to 1473 during the Muromachi period of Japan. Yoshimasa was the son of the sixth shogun Ashikaga Yoshinori. His official wife was Hino Tomiko.

On the August 16, 1443 (Kakitsu 3, 21st day of the 7th month), 10-year-old shogun Yoshikatsu died of injuries sustained in a fall from a horse. He had been shogun for only three years. Immediately, the bakufu elevated Yoshinari, the young shogun's even younger brother, to be the new shogun. Several years after becoming shogun, Yoshinari changed his name to Yoshimasa, by which name he is better known.

Significant events which shaped the period during which Yoshimasa was shogun:

A number of decisions lead eventually to armed conflict:

By 1464, Yoshimasa had no heir, so he adopted his younger brother, Ashikaga Yoshimi, in order to avoid any conflicts which might arise at the end of his shogunate. However, in the next year, Yoshimasa was surprised by the birth of a son, Ashikaga Yoshihisa. The infant's birth created a conflict between the two brothers over who would follow Yoshimasa as shogun. Yoshimasa's wife, Hino Tomiko, attempted to get Yamana Sōzen to support the infant's claim to the shogunate. By 1467 the simmering dispute had evolved, encouraging a split amongst the powerful daimyō and clan factions. The armed conflict which ensued has come to be known as the Ōnin War. This armed contest marks the beginning the Sengoku period of Japanese history, a troubled period of constant military clashes which would last over a century. A number of developments affect the unfolding Ōnin War's battles:

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