Ikoma clan

He was the lord of Yashima Domain in Dewa Province (Akita Prefecture). He is said to have been from Ikoma-sho, Yamato Province (Ikoma City, Nara Prefecture), and moved to Owari Province (Aichi Prefecture) during the late Muromachi period under Iehiro. After that, Chikamasa served Oda Nobunaga and Toyotomi Hideyoshi, and in 1585 (Tensho 13) he was given 23,000 koku of land in Takashima County, Omi Province (Takashima City, Shiga Prefecture). After Hideyoshi conquered Kyushu, he was given the entire province of Sanuki (Kagawa Prefecture), with 61,000 koku of land, and built Takamatsu Castle, where he lived. He was one of the three elders of the Toyotomi clan, and fought in the Bunroku and Keicho Wars. They also played important roles as advisors to Hideyori. In the Battle of Sekigahara, Chikayuki's son Kazumasa fought on the Eastern side, and his grandson Masatoshi fought on the Western side. After the battle, Kazumasa's stipend was increased to 170,000 koku. In 1640 (Kan'ei 17), during the reign of Masatoshi's son Takatoshi, an internal conflict called the "Ikoma Disturbance" occurred due to a dispute between vassals, and his territory was confiscated and he was transferred to Yajima in Dewa Province (Yurihonjo City) with a fief of 10,000 koku. Later, as his fief was divided, he became a hatamoto and continued to serve as a koutai yori aishu until the end of the Edo period. In 1868 (Meiji 1), Chikayuki pledged loyalty to the new government and established the Yajima domain with a fief of 15,000 koku. After the abolition of the feudal domains and the establishment of prefectures, he was made a baron.

[Shigeru Hashizume]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

出羽国(でわのくに)（秋田県）矢島(やしま)藩主。大和国(やまとのくに)生駒庄(しょう)（奈良県生駒市）の出身といわれ、室町後期家広(いえひろ)のとき尾張国(おわりのくに)（愛知県）へ移ったという。その後親正(ちかまさ)は織田信長、豊臣秀吉(とよとみひでよし)に仕え、1585年（天正13）近江国(おうみのくに)高島郡（滋賀県高島市）2万3000石を領した。さらに、秀吉の九州征服後、讃岐(さぬき)（香川県）一国を賜い6万1000石を領して高松城を築き居城する。豊臣家三中老の一人とされ、文禄(ぶんろく)・慶長(けいちょう)の役に出陣。また秀頼(ひでより)の補佐役としても重きをなす。関ヶ原の戦いでは親正の子一正(かずまさ)は東軍に、孫正俊(まさとし)は西軍にそれぞれ参陣した。役後一正は17万石に加増されている。1640年（寛永17）正俊の子高俊(たかとし)のとき、家臣の対立から「生駒騒動」とよばれる内紛が起こり、領地没収され、出羽国矢島（由利本荘(ゆりほんじょう)市）1万石に転封となった。のち封地分封したため旗本となり、交代寄合衆(こうたいよりあいしゅう)として幕末に至った。1868年（明治1）親敬(ちかゆき)は新政府に忠誠を誓い矢島藩1万5000石を興こし、廃藩置県後、男爵に列せられた。

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