was a Japanese samurai of the Sengoku Period, who most notably served the Oda clan. He was born in Mino Province, and first served the Saitō clan. After the fall of the Saitō, he was taken on as a retainer by

Oda Nobunaga was a Japanese ''daimyō'' and one of the leading figures of the Sengoku period. He is regarded as the first "Great Unifier" of Japan. Nobunaga was head of the very powerful Oda clan, and launched a war against other ''daimyō'' to unify ...

. He was particularly active during the time of

's entry into Kyoto. In late 1568, Masahisa joined Shibata Katsuie, Hosokawa Fujitaka, Hachiya Yoritaka, and Mori Yoshinari in attacking Iwanari Tomomichi's

Shōryūji Castle is a Japanese castle, castle in Nagaokakyō, Kyoto, Nagaokakyō, Kyoto Prefecture, Kyoto, Japan. History This castle was constructed in 1339 by Hosokawa Yoriharu, a major samurai commander under Ashikaga Takauji, the founder of the Ashikaga shog ...

. Later in 1570, at Battle of Anegawa while under attack from Asai forces under

Isono Kazumasa was a senior retainer of the Azai clan, later Oda clan and the castle lord in command of Sawayama castle. In 1570, at the Battle of Anegawa, he fought against Oda forces under Sakai Masahisa and kill Masahisa son, Sakai Kyuzo. In 1573, Oda No ...

, he lost his son

Sakai Kyūzō Sakai Kyūzō (坂井久蔵,1555–1570) was a retainer of Oda Nobunaga and son of Sakai Masahisa. He fought his first battle at age thirteen, and then fought another battle at the Battle of Anegawa (1570). In that battle, he was killed by gunfi ...

. Masahisa was also present at the Siege of Odani 1573. Masahisa died soon after, at the Battle of Katada. Family headship was thus inherited by his second son, Sakai '' Etchū no kami''.

References

* Papinot, Edmond. ''Historical and Geographical Dictionary of Japan'' *
page.sannet.ne.jp
* Naramoto Tatsuya (1994). ''Nihon no Kassen: Monoshiri Jiten''. Tokyo: Shufu to Seikatsusha.

Samurai Japanese warriors killed in battle 1570 deaths Year of birth unknown {{samurai-stub