Nobutsuna Sasaki - Sasaki no Butsuna

A military commander in the early Kamakura period. The fourth son of Sadatsuna. His mother was the daughter of Nitta Yoshishige. He was commonly known as Shiro. In 1200 (Shoji 2), he received orders from the shogunate to subjugate Kashiwabara Tamenaga, a resident of Omi Kashiwabara Manor (Maibara City, Shiga Prefecture), and in 1205 (Genkyu 2), he joined the shogunate army to attack Hiraga Tomomasa, the guardian of Kyoto, and was appointed Sakon no Shogen. When the Jokyu War broke out in 1221 (Jokyu 3), although many of his family members sided with the capital, Nobutsuna, who usually lived in Kamakura, followed Hojo Yasutoki and advanced in the battle of Uji River, where he distinguished himself in battle. After the rebellion, he was appointed as the governor of Omi in place of his elder brother Hirotsuna, who had joined the Kyoto faction, and in 1227 (Ansei 1) he was given the position of land steward of the Sasaki clan's main estates, Sasaki Manor (Omihachiman City, Shiga Prefecture) and Katata Manor (Otsu City, Shiga Prefecture). In 1234 (Bunreki 1), he joined the Council of Councilors and served in this position for two years. After resigning, he suddenly went to Kyoto, became a monk, and took the name Kyokaa, living in seclusion.

[Junzo Ota]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

鎌倉前期の武将。定綱(さだつな)の四子。母は新田義重(にったよししげ)の女(むすめ)。通称四郎。1200年（正治2）幕命を受け近江柏原(おうみかしわばら)荘（滋賀県米原(まいばら)市）の住人柏原為永(ためなが)を討伐、1205年（元久2）には幕府軍に従い京都守護平賀朝雅(ひらがともまさ)を攻め、左近将監(さこんのしょうげん)に任ぜられた。1221年（承久3）に承久(じょうきゅう)の乱が起こると、一族の多くが京方についたにもかかわらず、日ごろ鎌倉に居住していた信綱は北条泰時(やすとき)に従い攻め上がり宇治川の合戦で戦功をあげた。乱後、京方に加わった兄広綱(ひろつな)にかわり近江守護に任ぜられ、1227年（安貞1）佐々木氏の本荘(ほんしょう)である佐々木荘（滋賀県近江八幡(はちまん)市）、堅田(かたた)荘（同大津市）などの地頭職(じとうしき)を与えられた。1234年（文暦1）評定衆(ひょうじょうしゅう)に加わり2年間在職。辞職後にわかに上洛(じょうらく)して出家し虚仮阿(きょかあ)と号し遁世(とんせい)した。

［太田順三］

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