Justo Takayama Ukon (), born Takayama Hikogor () and also known as Dom Justo Takayama (c. 1552 3 or 5 February 1615) was a Japanese Catholic Kirishitan daimy and samurai who lived during the Sengoku period that witnessed anti-Catholic sentiment. Takayama had been baptized into the faith in 1564 when he was twelve, though over time neglected his faith due to his actions as a samurai. He eventually rekindled his faith just after his coming-of-age ritual near the age of 20. He abandoned his status to devote himself to his faith and was exiled to Manila, where he lived a life of holiness until his death two months later.His cause for sainthood began when he was declared a Servant of God. Reports in 2014 indicated that he would be beatified sometime in 2015 but Pope Francis later approved it on 21 January 2016; the beatification celebration occurred on 7 February 2017 in Osaka with Cardinal Angelo Amato presiding over the beatification on the pope's behalf.

Daimyo (大名, daimyō, Japanese pronunciation: [daimʲoː] (listen)) were powerful Japanese magnates, feudal lords who, from the 10th century to the early Meiji period in the middle 19th century, ruled most of Japan from their vast, hereditary land holdings. They were subordinate to the shōgun and nominally to the emperor and the kuge. In the term, dai (大) means "large", and myō stands for myōden (名田), meaning "private land".From the shugo of the Muromachi period through the Sengoku to the daimyo of the Edo period, the rank had a long and varied history. The backgrounds of daimyo also varied considerably; while some daimyo clans, notably the Mōri, Shimazu and Hosokawa, were cadet branches of the Imperial family or were descended from the kuge, other daimyo were promoted from the ranks of the samurai, notably during the Edo period.

Daimyo often hired samurai to guard their land, and they paid the samurai in land or food as relatively few could afford to pay samurai in money. The daimyo era ended soon after the Meiji Restoration with the adoption of the prefecture system in 1871.