supposedly not a retainer of any clan. Ichijō lived during the Sengoku Period

Sengoku period

The or Warring States period in Japanese history was a time of social upheaval, political intrigue, and nearly constant military conflict that lasted roughly from the middle of the 15th century to the beginning of the 17th century. The name "Sengoku" was adopted by Japanese historians in reference...

 of the 16th century to that of the Azuchi-Momoyama period

Azuchi-Momoyama period

The came at the end of the Warring States Period in Japan, when the political unification that preceded the establishment of the Tokugawa shogunate took place. It spans the years from approximately 1573 to 1603, during which time Oda Nobunaga and his successor, Toyotomi Hideyoshi, imposed order...

 of the 17th century. Ichijō was the son of Ichijo Kanesada

Ichijo Kanesada

was the succeeding ruling head over Ichijō family's Tosa Province, throughout the late Sengoku period of Feudal Japan.He was a Christian and had baptismal name ....

. Following the death of his family of Ichijō, he then went on to marry the daughter of the famous leader of the Chōsokabe clan

Chosokabe clan

The was a Japanese samurai clan of the Sengoku period, that controlled Tosa Province , and later Shikoku Island. The clan is sometimes also known as...

 Chōsokabe Motochika

Chosokabe Motochika

was a Sengoku period daimyo in Japan. He was the 21st chief of the Chōsokabe clan of Tosa Province . He was the son and heir of Chōsokabe Kunichika and his mother was a daughter of the Saitō clan of Mino Province....

. However, after defying the will of his father-in-law (who was currently Motochika), he was killed.