was a Japanese daimyo

Daimyo

is a generic term referring to the powerful territorial lords in pre-modern Japan who ruled most of the country from their vast, hereditary land holdings...

 who lived from the late 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...

 through the early Edo period

Edo period

The , or , is a division of Japanese history which was ruled by the shoguns of the Tokugawa family, running from 1603 to 1868. The political entity of this period was the Tokugawa shogunate....

. Also known as Urakusai (有楽斎), he was a brother of Oda Nobunaga

Oda Nobunaga

was the initiator of the unification of Japan under the shogunate in the late 16th century, which ruled Japan until the Meiji Restoration in 1868. He was also a major daimyo during the Sengoku period of Japanese history. His opus was continued, completed and finalized by his successors Toyotomi...

. Nagamasu converted to Christianity

Christianity

Christianity is a monotheistic religion based on the life and teachings of Jesus as presented in canonical gospels and other New Testament writings...

 in 1588 and took the baptismal name of John.

Nagamasu was an accomplished practitioner of the tea ceremony

Tea ceremony

A tea ceremony is a ritualised form of making tea. The term generally refers to either chayi Chinese tea ceremony, chado Japanese tea ceremony, tarye Korean tea ceremony. The Japanese tea ceremony is more well known, and was influenced by the Chinese tea ceremony during ancient and medieval times....

, which he studied under the master, Sen no Rikyū

Sen no Rikyu

, is considered the historical figure with the most profound influence on chanoyu, the Japanese "Way of Tea", particularly the tradition of wabi-cha...

. He eventually started his own school of the tea ceremony.

Nagamasu divided his fief between his sons Nagamasa

Oda Nagamasa

was a Japanese daimyo of the early Edo period, who ruled the Kaijū-Shibamura Domain. He was the nephew of Oda Nobunaga. Nagamasa was born in 1587, the fourth son of Nobunaga's younger brother Nagamasu. In his early years he became a page to Tokugawa Ieyasu, and received a stipend of 3,000 koku...

 and Hisanaga. Nagamasa founded the Kaijū-Shibamura Domain, while Hisanaga became lord of the Yanagimoto Domain

Yanagimoto Domain

The ' was a Japanese domain of the Edo period. Its headquarters were located in what is now Tenri, Nara.-List of lords:*Oda clan, 1615-1871 #Naonaga#Nagatane#Hidekazu#Hidechika#Shigezumi #Hideyuki#Nobukata#Hidekata...

.