Daihoji clan

Japanese: 大宝寺氏 - だいほうじうじ

A powerful clan in the Middle Ages in the Shonai region of Dewa Province. Descendants of Muto Yorihira, a bureaucrat from the early days of the Kamakura Shogunate. In 1189 (Bun'ji 5), Yorihira's eldest son, Sukeyori, was appointed land steward of Oizumisho in Dewa Province, which was under the jurisdiction of Chokodo Domain. His second son, Ujihira, then inherited the position, and the Oizumi clan, vassals of Dewa Province, took Oizumisho as their family name. During the Nanboku-cho period, Oizumi Nagamori built a castle at Daihoji (Daiboji, Daibonji, Daihoji) in Oizumisho, and took the name Daihoji. After that, they continued to call themselves the Oizumi clan and the Muto clan. In the early Muromachi period, they were subordinate to the Uesugi clan, land stewards of Oizumisho, but eventually gained the status of Kyoto fuchishu (a Kyoto stipendant), and maintained their position as powerful local lords in Dewa Province.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

出羽国庄内地方の中世の豪族。鎌倉幕府草創期の官僚武藤頼平の後裔。1189年(文治5)頼平の長子資頼が長講堂領出羽国大泉庄の地頭に補任，ついで次男氏平が地頭職を継承し，大泉庄を名字の地とする出羽国御家人大泉氏となり，南北朝期に大泉長盛が大泉庄大宝寺(大梵寺，大梵字，大法寺)の地に城郭を構え，大宝寺氏を称した，という。以後も大泉氏･武藤氏を併称。室町初期に大泉庄地頭上杉氏の配下にあったが，やがて京都扶持衆（ふちしゆう）の地位を得て，出羽国有力国人の位置を保った。

出典　株式会社平凡社世界大百科事典第２版について　情報

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