In this Japanese name, the family name is Ise.
Ise Sadaoki (伊勢 貞興, 1559 – July 2, 1582) was a samurai, and retainer of the Akechi clan following the Sengoku period to the Azuchi-Momoyama period of the 16th century Japan. Married to Akechi Mitsuhide's daughter, Sadaoki later served under Mitsuhide, then Oda Nobunaga. He lost his life in his 20s, during the Battle of Yamasaki, in which he had begun serving under Mitsuhide again. Mitsuhide himself was killed by a bandit known as Nakamura a mere day or two later.
The original article can be found at Ise Sadaoki and the edit history here.