Ichijō Tadamasa

In this Japanese name, the surname is Ichijō.

Ichijō Tadamasa (一条いちじょう 内政ないせい, 1560 – July 2, 1580) lived during the Sengoku Period of the 16th century in Japan. Ichijō was the son of Ichijo Kanesada. Following the destruction of the Ichijo clan, he then went on to marry the daughter of the famous leader of the Chōsokabe clan, Chōsokabe Motochika. However, after defying the will of his father-in-law, he was killed.