Ōmura Sumitada (大村 純忠, 1533 – June 23, 1587) was a Japanese daimyō lord of the Sengoku period. He achieved fame throughout the country for being the first of the daimyo to convert to Christianity following the arrival of the Jesuit missionaries in the mid-16th century. Following his baptism, he became known as "Dom Bartolomeu". Sumitada is also known as the lord who opened the port of Nagasaki to foreign trade.
Ōmura Sumitada was born in 1533, the son of Arima Haruzumi, lord of Shimabara, and his wife, who was a daughter of Ōmura Sumiyoshi. His childhood name was Shōdōmaru 勝童丸. At age 5, he was adopted by his uncle Ōmura Sumisaki, and succeeded to the Ōmura family headship in 1550. As Sumisaki had no legitimate heirs, and the Ōmura clan had its origins in the family line of the Arima, Sumisaki readily adopted the young Shodomaru, who took the name Sumitada at the time of his succession.
Following his succession, he was immediately faced with a multitude of pressures, the greatest of which was the attack from Ryūzōji Takanobu of Hizen-Saga. Sumitada found the answer to his problems in the form of Christianity. In 1561, following the murder of foreigners in Hirado (in the area of influence of the Matsura clan), the Portuguese began to look for other ports where they could trade.
In response to their search, Sumitada offered them safe haven in his domain, at Yokoseura. This cast a great impression on the Portuguese, and particularly on the Society of Jesus (the Jesuits). This they readily agreed to, and soon after, in 1563, Sumitada and his retainers became Christian, and Sumitada took the baptismal name Bartolomeu. However, Sumitada was radical in his faith, razing Buddhist temples and Shinto shrines, defacing his ancestors' graves, and because he forced Christianity on his retainers and the people of his domain, he ran the serious risk of a general uprising. There is also a view that Sumitada pursued Christianity mainly to profit from Portuguese technology and weapons.
"As Omura Sumitada had gone off to the wars, it so happened that he passed on the way an idol, Marishiten by name, which is their god of battles. When they pass it, they bow and pay reverence to it, and the pagans who are on horseback dismount as a sign of their respect. Now the idol had above it a cockerel. As the daimyo came there with his squadron he had his men stop and ordered them to take the idol and burn it together with the whole temple; and he took the cockerel and gave it a blow with the sword, saying to it, "Oh, how many times have you betrayed me!" And after everything had been burnt down, he had a very beautiful cross erected on the same spot, and after he and his men had paid very deep reverence to it, they continued on their way to the wars."
Goto Takaakira, an illegitimate son of Ōmura Sumisaki who hated Sumitada, led an uprising against him. During the chaos, Yokoseura was burned, ending the foreign trade there. As a result, in 1570, Sumitada opened the port of Nagasaki to the Portuguese and sponsored its development. When the Ryūzōji attacked Nagasaki in 1578, the Portuguese assisted Sumitada in repulsing them. Following this event, on June 9, 1580 Sumitada ceded Nagasaki "in perpetuity" to the Society of Jesus.
Following Toyotomi Hideyoshi's campaign against the Shimazu clan, the Ōmura were confirmed in their holdings, though Nagasaki was taken from the Jesuits and made into a chokkatsu-ryo, or direct landholding, of the Toyotomi administration.
Sumitada handed over domainal administration to his son Omura Yoshiaki and retired, living in a mansion at Sakaguchi. He died there of tuberculosis, on June 23, 1587.
- from The Samurai Sourcebook
- Stephen Turnbull, The Samurai Sourcebook London: Arms and Armour Press, 1998. (ISBN 1-85409-523-4)
- Information on Sumitada, as well as a copy of the edict by which he granted Nagasaki to the Jesuits
- Genealogy of the lords of Omura, from Sumitada's son Yoshisaki to the last lord Sumihiro
- Lengthy genealogy and discussion of Omura clan history