Tadayo Sakai - It's Sakai

A fudai daimyo in the early Edo period. Lord of Maebashi Castle in Kozuke (Gunma Prefecture). Elderly councilor. Born in Nishio as the eldest son of Shigetada, lord of Nishio Castle in Mikawa (Aichi Prefecture), the direct descendant of Utanosuke Sakai, a senior retainer of the Tokugawa clan. In 1590 (Tensho 18), he became a chief retainer of Tokugawa Hidetada, and when Hidetada became the second shogun, he became a central advisor along with Doi Toshikatsu, Okubo Tadachika, and Honda Masanobu. In 1617 (Genwa 3), he inherited the heirloom, and together with his previous fiefdom, he was given 85,000 koku and made Maebashi his castle (later receiving an increase to over 120,000 koku). In 1890, he became a retainer of Iemitsu, and when Iemitsu became shogun in the same year, he again served as his advisor. In 1891, after the death of Hidetada, he was ordered to guard the Nishinomaru of Edo Castle, and lived there. In 1891, while Iemitsu was visiting Kyoto, a fire burned down the Nishinomaru, and he was criticized for his subsequent actions and temporarily suspended from service, but was soon pardoned.

[Ryosho Hayashi]

"Sakai Tadayo and Doi Toshikatsu by Shinji Yoshitaka" (included in "The Edo Shogunate, Vol. 1"; 1964, Jinbutsu Oraisha)

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

江戸初期の譜代(ふだい)大名。上野(こうずけ)（群馬県）前橋城主。老中。徳川氏の重臣雅楽助(うたのすけ)酒井氏の嫡流、三河（愛知県）西尾城主重忠(しげただ)の長子として西尾で生まれる。1590年（天正18）徳川秀忠(ひでただ)の家老となり、秀忠が2代将軍となると、土井利勝(としかつ)、大久保忠隣(ただちか)、本多正信(まさのぶ)らとともに補佐の中心となった。1617年（元和3）遺領を相続し、これまでの知行(ちぎょう)とあわせて8万5000石を領し前橋を居城とした（のち加増を受け12万石余となる）。23年家光(いえみつ)付きとなり、同年家光が将軍となると、またよく補佐の任を果たした。32年（寛永9）大御所(おおごしょ)秀忠没後は江戸城西の丸の守衛を命ぜられ、ここに住した。34年家光上洛(じょうらく)中に失火により西の丸が焼け、その後の措置を責められ一時出仕を止められたが、まもなく赦(ゆる)されている。

［林　亮勝］

『進士慶幹著「酒井忠世と土井利勝」（『江戸幕府　上』所収・1964・人物往来社）』

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