Lifespan: 15xx to Kanei 5 (1628)
Clan: Yasui → Machino
Lord: Gamō Ujisato → Gamō Hideyuki → Gamō Tadasato
Father: Yasui Yoshihide
Adoptive Father: Machino Bizen-no-kami Hidenaga
Siblings: (Older brother), Shigeyori
Wife: Nursemaid for Gamō Ujisato
Children: Yukikazu, Shigehide
Machino Shigeyori served as a bushō during the Azuchi-Momoyama and early Edo periods. He was a retainer of the Gamō clan.
Shigeyori was born as the second son of Yasui Yoshihide. Originally, he served as a Shinto priest at the Takeda Shrine in the Gamō District of Ōmi Province. His adoptive father, Machino Bizen-no-kami Hidenaga, died in 1584 at the age of seventy-seven. Hidenaga is surmised to have been the son of Machino Masaaki Yasusada, a member of a senior political organ in the Muromachi bakufu from the Eishō to Tenbun eras. The Machino clan was a branch of the Miyoshi clan, serving in the Kamakura administration and the office for administering claims known as the monchūjo. The main branch of the family in Kyōto lost in a dispute with the Settsu clan (descended from the Nakahara family), fell into ruin early in the Sengoku period, and may have turned for support to the Gamō clan. The movements of the Machino clan after Ashikaga Yoshiteru sought refuge in Ōmi Province during the Tenbun era (1532 to 1555) cannot be determined from historical accounts of the bakufu. According to one record, the Machino served as hereditary retainers of the Gamō, but references to the clan do not appear in accounts related to the Gamō until the Genki era (1570 to 1573).
Shigeyori served as a direct retainer of Gamō Ujisato from the time that Ujisato was in Hino, and followed Ujisato when Ujisato was sent to Gifu Castle as a hostage of the Oda clan. Immediately after the coup d’état against Oda Nobunaga known as the Honnō Temple Incident, Shigeyori joined Ujisato by holing-up in Hino Castle.
After Ujisato was moved to Matsusaka, Shigeyori served as a magistrate known as a Yamada-bugyō with responsibility for managing the affairs of the Ise Shrine. In the ninth month of 1587, he donated 200 hiki worth of coins to the Umamioka-Watamuki Shrine in Hino. In 1590, when Ujisato was moved to Aizu-Kurogawa Castle, Shigeyori, along with his son, Yukikazu, served as chamberlains at Inawashiro and Nihonmatsu castles, governing a fief of 38,000 koku. During the Kasai-Ōsaki Uprising and the Revolt of Kunohe Masazane, Shigeyori joined Gamō Satoyasu to fight as commanders of the second battalion. When Satoyasu served as a magistrate for criminal affairs, Shigeyori and Tamai Teiyū served as magistrates to affix seals on official communications.
In 1595, Gamō Ujisato died and was succeeded by his son, Gamō Hideyuki. Satoyasu then monopolized political affairs, leading to confrontation with Gamō Satoyoshi and Gamō Satonari. Satoyasu called the head of the family servants, Watari Hachiemon, to Aizu-Wakamatsu Castle, and slayed him. This enraged hereditary retainers, including Shigeyori who sought to assassinate Satoyasu in revenge. Satoyasu was censured by Toyotomi Hideyoshi and ousted from the Gamō family, after which he came under the custody of Katō Kiyomasa. These conflicts within the clan during this period are known as the Gamō Disturbance.
In the era of Gamō Hideyuki, at Mooka Castle, Shigeyori received a fief of 8,000 koku and became a magistrate for criminal affairs. Owing to his contributions on behalf of the Eastern Army at the Battle of Sekigahara in the ninth month of 1600, Hideyuki was permitted to return to Aizu-Wakamatsu. At this time, Shigeyori became the chamberlain of Shirakawa-Komine Castle with a fief of 28,000 koku and was re-appointed as the magistrate for criminal affairs.
In the era of Gamō Tadasato, Shigeyori transferred headship of the clan to his eldest son, Machino Yukikazu, and then, along with his second son, Machino Shigehide, he returned to the Takeda Shrine.