Bushō and Hatamoto
Lifespan: Tenbun 18 (1549) to 6/14 of Kanei 1 (1624)
Rank: bushō, hatamoto
Titles: Junior Fifth Rank (Lower), Governor of Iwami
Bakufu: Edo – served as a hatamoto
Lord: Imagawa Ujizane → Tokugawa Ieyasu
Father: Udono Nagateru
Siblings: Ujinaga, Ujitsugu
Udono Ujinaga served as a bushō during the Sengoku and Azuchi-Momoyama periods and as a hatamoto during the early Edo period.
In 1549, Ujinaga was born as the son of Udono Nagateru, a retainer of Imagawa Yoshimoto a sengoku daimyō who was the lord of Kaminogō Castle in Mikawa Province and who governed the entire Hoi District. In 1560, after Yoshimoto was killed by the Oda army at the Battle of Okehazama, the destiny of the Udono clan who were relatives of Yoshimoto took a sudden turn for the worse.
Similar to the Udono clan, Matsudaira Motoyasu (later known as Tokugawa Ieyasu) also served as a retainer of the Imagawa family. Acting upon dual aims to become independent of the Imagawa and to unify Mikawa Province, Motoyasu began to launch attacks against his opponents. Neighboring forces turned to the Matsudaira clan, leaving Kaminogō Castle isolated. In 1562, the castle fell to an attack by the Matsudaira army. Ujinaga’s father (Nagateru) and grandfather (Nagamochi) were killed in action while Ujinaga and his younger brother (Ujitsugu) were apprehended. In exchange for the prisoners, Motoyasu demanded that the Imagawa clan return his formal wife (Senahime), eldest son (Takechiyo), and eldest daughter (Kamehime) who had been tendered to the Imagawa during the period that he served the clan. The formal wife of Ujinaga’s grandfather (Nagateru) was the younger sister of Imagawa Yoshimoto. From the perspective of Imagawa Ujizane, the son of Yoshimoto who was head of the clan at the time, the Udono brothers were close relatives.
The hostage negotiations bore fruit so that Ujinaga and Ujitsugu were transferred to the Imagawa. Having lost their base in Mikawa, Ujinaga and Ujitsugu went to serve Matsui Munetsune at Futamata Castle in Tōtōmi Province. In 1568, Takeda Shingen invaded Tōtōmi from the northeast in tandem with Motoyasu from the west and attacked Futumata Castle. The Imagawa clan lost their territory from east to west and were extinguished. Meanwhile, Ujinaga and UJitsugu surrendered to Ieyasu and, thereafter, served as retainers of the Matsudaira.
Later, Ujinaga fought on behalf of Ieyasu at the Battle of Anegawa in 1570 and at the Battle of Nagashino in 1575. In 1590, after the Conquest of Odawara in which the Tokugawa subdued the Hōjō of Sagami Province, Ieyasu transferred Ujinaga to the Kantō Region and awarded him a fief of 1,700 koku, upon which Ujinaga became a hatamoto, or direct retainer of the Edo bakufu.
In 1593, Ujinaga was invested with the titles of Junior Fifth Rank (Lower) and Governor of Iwami. He died on 6/14 of Kanei 1 (1624) at the age of seventy-six.