Ishikawa Kazumasa

Samurai of the Sengoku era; major samurai ally of the Tokugawa clan

In this Japanese name, the surname is  Ishikawa.

Ishikawa Kazumasa

石川 数正

Ishikawa Kazumasa in Nagashino

Lord of Matsumoto
In office
1590–1609
Personal details
Born| 1534 (1534)
Mikawa Province
Died| 1609 (aged 74-75)
Military service
Allegiance|  Matsudaira clan
Imagawa clan
Tokugawa clan
Toyotomi clan
Unit|  Ishikawa clan
Commands| Matsumoto Castle
Battles/wars| Siege of Terabe (1558)
Siege of Marune (1560)
Siege of Kaminogo Castle (1562)
Battle of Azukizaka (1564)
Battle of Anegawa (1570)
Battle of Mikatagahara (1573)
Battle of Nagashino (1575)
Battle of Komaki and Nagakute (1584)

Ishikawa Kazumasa (石川 数正; 1534–1609) was a Japanese notable retainer under Tokugawa Ieyasu, who served him since childhood, when they were both hostages under the Imagawa in 1551.

## Biography

[edit]

Kazumasa, also accompanied Ieyasu in the Siege of Terabe 1558, and later at Siege of Marune 1560\. After 1560, when Ieyasu abandoned the Imagawa, Kazumasa then became a valued retainer and administrator under him.

In 1562, he took part in the Siege of Kaminogo Castle, when Ieyasu managed to convince Imagawa Ujizane to release his family, Kazumasa acted as guardian of the Imagawa family, which at the time was a very dangerous task.

By 1567, the majority of daimyō forces in the Tokugawa armies were organized in two divisions, each with a separate commander. Kazumasa was placed over the forces of 13 Tokugawa daimyō-vassals and his counterpart, Sakai Tadatsugu, was given command over the forces of 18 daimyō-vassals.

In 1573, He participated in the Battle of Mikatagahara.[1] and 1575 in the Battle of Nagashino.

After Toyotomi Hideyoshi's victory over Shibata Katsuie in 1583, Ieyasu expressed his congratulations to Hideyoshi through Kazumasa. Later, Kazumasa and Sakakibara Yasumasa accordingly issued statements attacking Hideyoshi, due to the Tokugawa's decision. Kazumasa served at the Komaki headquarters during the Komaki-Nagakute Campaign in 1584.

In 1585, Kazumasa, very dismayed by what he saw as Tokugawa's foolhardy path of resistance against Toyotomi Hideyoshi, later he switched sides to Hideyoshi. This inconvenienced Ieyasu, who had to reconstruct his military organization and defensive policies, since Kazumasa had significant knowledge about Tokugawa organization.

## Death

[edit]

After Hideyoshi's death, and the establishment of Tokugawa Shogunate, Kazumasa and his family were punished by being deprived of their fief. Kazumasa then later decided to retire and live with his son Ishikawa Yasunaga, until he died in 1609.

## References

[edit]

1. ^ Turnbull, Stephen (2000). The Samurai Sourcebook. London: Cassell & C0. pp. 222–223\. ISBN 1854095234.

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Prominent people of the Sengoku and Azuchi–Momoyama periods

Emperor|

* Go-Kashiwabara
* Go-Nara
* Ōgimachi
* Go-Yōzei

Three major daimyō|

* Oda Nobunaga
* Toyotomi Hideyoshi
* Tokugawa Ieyasu

Shōgun|

* Ashikaga Yoshiharu
* Ashikaga Yoshiteru
* Ashikaga Yoshihide
* Ashikaga Yoshiaki
* Tokugawa Hidetada

Other daimyō|

* Amago Tsunehisa
* Amago Haruhisa
* Asakura Yoshikage
* Ashina Moriuji
* Akechi Mitsuhide
* Azai Nagamasa
* Chōsokabe Motochika
* Date Terumune
* Date Masamune
* Hatakeyama Yoshitaka
* Honda Tadakatsu
* Hōjō Sōun
* Hōjō Ujimasa
* Hōjō Ujiyasu
* Ii Naomasa
* Imagawa Yoshimoto
* Imagawa Ujizane
* Isshiki Yoshimichi
* Itō Yoshisuke
* Kitabatake Tomonori
* Kuroda Nagamasa
* Matsunaga Hisahide
* Miyoshi Nagayoshi
* Mogami Yoshiaki
* Mōri Motonari
* Ōuchi Yoshitaka
* Ōuchi Yoshinaga
* Ōtomo Sōrin
* Rokkaku Yoshikata
* Ryūzōji Takanobu
* Saitō Dōsan
* Saitō Yoshitatsu
* Sakai Tadatsugu
* Sakakibara Yasumasa
* Satomi Yoshitaka
* Sanada Yukitaka
* Sanada Masayuki
* Sanada Nobuyuki
* Satake Yoshishige
* Sagara Yoshihi
* Shimazu Yoshihisa
* Shimazu Yoshihiro
* Tachibana Dōsetsu
* Takeda Nobutora
* Takeda Shingen
* Tōdō Takatora
* Uesugi Kagekatsu
* Uesugi Kenshin
* Uesugi Norimasa
* Ukita Naoie
* Uragami Munekage
* Yamana Toyokuni
* Yamana Suketoyo

Swordsmen|

* Marume Nagayoshi
* Hikita Bungorō
* Kamiizumi Nobutsuna
* Miyamoto Musashi
* Mizuno Katsushige
* Sasaki Kojirō
* Tadashima Akiyama
* Tsukahara Bokuden
* Tsutsumi Hōzan
* Yagyū Munenori
* Yagyū Munetoshi
* Shinmen Munisai
* Itō Ittōsai

Advisers and strategists|

* Kobayakawa Takakage
* Kuroda Yoshitaka
* Naoe Kanetsugu
* Takenaka Shigeharu
* Usami Sadamitsu
* Yamamoto Kansuke

Ninja, rogues and
mercenaries

* Mochizuki Chiyome
* Fūma Kotarō
* Hatsume no Tsubone
* Hattori Hanzō
* Ishikawa Goemon
* Katō Danzō
* Kirigakure Shikaemon
* Kōzuki Sasuke
* Nakamura Chōbei
* Ohama Kagetaka
* Sugitani Zenjūbō
* Saika Magoichi
* Suzuki Sadayu
* Suzuki Shigehide
* Suzuki Shigetomo
* Suzuki Magoroku
* Igasaki Dōshun
* Umemura Sawano

Monks and other
religious figures

* Ankokuji Ekei
* Hongan-ji Kennyo
* Hon'inbō Sansa
* Ishin Sūden
* Jion
* Koji Kashin
* Nankōbō Tenkai
* Rennyo
* Sessai Chōrō
* Shimozuma Chūkō
* Shimotsuma Rairen
* Shimozuma Rairyū
* Takuan Sōhō

Female castellans|

* Ashikaga Ujihime
* Chacha
* Miyohime
* Munakata Saikaku
* Nene
* Onamihime
* Otazu no Kata
* Otsuya no Kata
* Seishin-ni
* Tachibana Ginchiyo

Female warriors|

* Akai Teruko
* Fujishiro Gozen
* Ichikawa no Tsubone
* Ikeda Sen
* Kaihime
* Kamehime
* Katakura Kita
* Katō Tsune
* Komatsuhime
* Kushihashi Teru
* Maeda Matsu
* Myōki
* Myōrin
* Numata Jakō
* Ōhōri Tsuruhime
* Okaji no Kata
* Okyō no Kata
* Omasa
* Oni Gozen
* Shigashi
* Shirai no Tsubone
* Ueno Tsuruhime
* Yuki no Kata

Other women|

* Lady Acha
* Akohime
* Asahihime
* Lady Chaa
* Chikurin-in
* Gōhime
* Lady Goryū
* Dota Gozen
* Gotokuhime
* Tsumaki Hiroko
* Lady Hayakawa
* Hosokawa Gracia
* Irohahime
* Izumo no Okuni
* Jukei-ni
* Shimazu Kameju
* Lady Kasuga
* Keigin-ni
* Kitsuno
* Konoe Sakiko
* Kōzōsu
* Kyōgoku Maria
* Kyōgoku Tatsuko
* Kyōun'in
* Matsuhime
* Megohime
* Lady Myōkyū
* Naitō Julia
* Nōhime
* Odai no Kata
* Oeyo
* Oichi
* Oinu
* Ohatsu
* Lady Ōkurakyo
* Ōmandokoro
* Ono Otsū
* Ōtomo-Nata Jezebel
* Rikei
* Lady Saigō
* Lady Sanjō
* Seien-in
* Seikōin
* Senhime
* Sentōin
* Tobai-in
* Toyotomi Sadako
* Tomo
* Lady Toida
* Tokuhime
* Tōshōin
* Lady Tsukiyama
* Yamauchi Chiyo
* Yoshihime
* Yoshihiro Kikuhime

Foreign people in Japan|

* Alessandro Valignano
* Francis Xavier
* Gaspar Coelho
* Jacob Quaeckernaeck
* Jan Joosten van Lodensteijn
* Julia Ota
* Luís Fróis
* Soga Seikan
* Wakita Naokata
* Wang Zhi
* William Adams
* Yasuke

See also|

* List of samurai from the Sengoku period

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