Lifespan: Tenbun 17 (1548) to 11/23 of Bunroku 2 (1594)
Other Names: Shinbei, Taneshige
Title: Ōsumi-no-kami (informal)
Father: Endō Taneyori
Siblings: Tanetoshi, Tanemoto
Wife: Daughter of Endō Morikazu
Endō Tanemoto served as a bushō during the Sengoku and Azuchi-Momoyama periods. He served as the lord of Kigoshi Castle in the Gujō District of Mino Province.
Tanemoto was born as the second son of Endō Taneyori.
In the eleventh month of 1570, after the death in battle of his older brother, Endō Tanetoshi, at the Siege of Shiga, Tanemoto succeeded him. Along with the main branch of the Endō led by Endō Yoshitaka, the lord of Hachiman Castle, the two families were referred to as the Ryō-Endō, or two Endō families. In the ninth month of 1571, Tanemoto joined Yoshitaka to serve in the Burning of Mount Hiei.
Around the time of the fall of the Mino-Saitō, the two Endō families surrendered to Oda Nobunaga, but, from around the fifth month of 1572, Tanemoto, through his chief retainer, Endō Kaga-no-kami, fostered friendly relations with Takeda Shingen, the sengoku daimyō of Kai Province. In a letter from Shingen dated 11/19 of Genki 3 (1572) after Shingen commenced his western campaign, Shingen urged Tanemoto to oppose Nobunaga. In the fourth month of 1573, after Shingen died while leading the campaign, Nobunaga dispatched forces to Gujō with the objective of subduing the Endō for exhibiting a vague position regarding their allegiance toward Nobunaga. The Endō clan is said to have promptly surrendered and showed obedience but there is a view that their effort of pretending to obey but secretly betraying Nobunaga was not detected by him.
In the eighth month of 1573, Tanemoto participated in an attack against the Asakura clan of Echizen Province. In 1574, Saitō Toshiharu, the lord of Kajita Castle, advanced into Gujō, but was repelled by forces led by one of Tanemoto’s retainers named Yoshida Sakyō-no-jō. In the second month of 1582, after Nobunaga attacked Takeda Katsuyori, Tanemoto and Yoshitaka affiliated with Kanamori Nagachika to invade Kai Province from Hida, destroying Katsuyori on Mount Tenmoku in an event known as the Conquest of Kōshū.
On 6/2 of Tenshō 10 (1582), Nobunaga died in a coup d’état orchestrated by a senior retainer named Akechi Mitsuhide in the Honnō Temple Incident. In the wake of this event, after Oda Nobutaka became the lord of Mino, Tanemoto supported him and continued to do so even after Nobutaka came into conflict with Hashiba Hideyoshi. In the first month of 1583, Tanemoto was praised by Nobutaka for his contributions in capturing Suhara and Horado castles which had been aligned with Hideyoshi. Thereafter, at the Battle of Tachibanayama, Tanemoto was attacked by Mori Nagayoshi and surrendered. In 1584, at the Battle of Komaki and Nagakute, Tanemoto supported Hideyoshi and, initially, appeared to have served under the command of Ikeda Tsuneoki, but, after the death in battle of Tsuneoki, came under Hori Hidemasa.
In 1585, Tanemoto and Yoshitaka served in the Conquest of Kishū led by Hideyoshi.
In 1587, Tanemoto and Yoshitaka served in the Conquest of Kyūshū by Hideyoshi. In 1588, after Hideyoshi built a palace in Kyōto known as the jurakutei, Tanemoto and Yoshitaka were given residences near the western gateway to Kyōto so Yoshitaka brought his family to the capital.
In 1588, owing to resistance toward Hideyoshi at the Battle of Tachibanayama and elsewhere, the landholdings of the families led by Tanemoto and Yoshitaka totaling over 20,000 koku were seized while the fiefs held by Tanemoto and Yoshitaka were reduced to 7,500 koku in Obara and 5,500 koku in Inuji respectively. As a result, the Endō struggled to support their retainers, one-third of whom went to serve other families, returned to farming, or became rōnin, or wandering samurai. After Yoshitaka’s transfer, Inaba Sadamichi entered Hachiman Castle with a fief of 40,000 koku in the Gujō District and in Tsubodani in the Mugi District. After Gujō was granted to Sadamichi, Tanemoto and Yoshitaka went to Seki without receiving their reduced landholdings and borrowed a house from a local named Katori Zenzaemon to reside. They then encountered Onogi Shigekatsu and Teranishi Masakatsu who had come for the conduct of a nationwide land survey ordered by the Toyotomi administration and requested the substitute landholdings. After these two returned to the capital and informed Hideyoshi, Tanemoto and Yoshitaka finally obtained their land in Obara and Inuji and, in 1590, moved.
In 1590, during the Conquest of Odawara, Tanemoto and Yoshitaka led over 900 soldiers, followed by an expedition to Aizu launched by Hideyoshi. In 1592, during the Bunroku Campaign on the Korean Peninsula, Tanemoto and Yoshitaka served under the command of Oda Hidenobu, leading over 100 troops into battle in Pusan, Yangsan, Ulsan, and Chinju and returning to Japan after a two-year deployment. Thereafter, Tanemoto died of illness at the Kokubun Temple in Nagato Province. He was succeeded by Endō Tanenao. Under another theory, Tanenao was the son of Tanemoto’s younger brother, Endō Taneshige.