, also known as Fujiwara no Yoshishige (è¤å 義é®) or à Âtomo Yoshishige (大å 義é®), was a Japanese feudal lord (daimyà Â) of the à Âtomo clan, one of the few to have converted to Catholicism. The eldest son of , he inherited the Funai Domain, on Kyà «shà «, Japan's southernmost main island, from his father. He is perhaps most significant for having appealed to Toyotomi Hideyoshi to intervene in Kyà «shà « against the Shimazu clan, thus spurring Hideyoshi's Kyà «shà « Campaign of 1587.
In 1545, Sà Ârin married Lady Nata (Jezebel) who became one of the leading personalities against the spread of Christianity in western Japan. She was the daughter of Nata Akimoto, the head priest of the Nata Hachiman Shrine. Sà Ârin's domain included the port of Funai, which was frequented by Jesuit priests, bandits, Chinese merchants, and Japanese sea lords. In addition to unifying much of Kyà «shà « under his control, therefore securing a significant gain in his clan's power and prestige, Sà Ârin is also quite significant as one of the daimyà Âs to meet personally with the Jesuit missionary Francis Xavier in 1551, one of the first Europeans in Japan. Referred to as the "King of Bungo" in the Jesuit records, Sà Ârin sent political delegations to Goa in the 1550s, and the Tenshà  embassy to Rome in 1582.
In addition to fostering relations with the Christians, Yoshishige fought a number of battles over the course of the 1550s, both gaining and consolidating territory. He defeated Kikuchi Yoshimune in 1551, and the warrior monks of Usa five years later; in 1557 he defeated Akizuki Kiyotane and seized Chikuzen Province.
In 1562, Yoshishige adopted the name "Sanbisai Sà Ârin" upon becoming a Buddhist monk, but remains best known as à Âtomo Sà Ârin, despite converting to Christianity under the baptismal name Francisco in 1578.
In 1557, Ã Âuchi Yoshinaga (Sorin's younger brother) was forced to commit suicide by MÃ Âri Motonari, and in 1558 Mori captured Moji castle from the Ouchi.
In September 1559, Ã Âtomo SÃ Ârin then turned against the MÃ Âri clan. He recaptured Moji castle. However, the MÃ Âri forces led by Kobayakawa Takakage and Ura Munekatsu quickly took the castle again.
In 1561, Ã Âtomo SÃ Ârin, in alliance with the Portuguese, laid siege to Moji. Ã Âtomo led an all-out assault on the castle but failed, and the castle finally remained in MÃ Âri possession.
The head of the Mà Âri at that time, Mà Âri Takamoto, was assisted by the Shà Âgun Ashikaga Yoshiteru which led to a peace treaty between the clans. To secure peace, Sà Ârin proposed that his daughter marry Takamoto's son, Mà Âri Terumoto. It is not clear, however, if this offer was ever followed through.
In 1564, Sà Ârin was forced to quell a rebellion of the Akizuki clan of Chikuzen province, and then moved against the Ryà «zà Âji clan of Hizen Province, which prompted the interference of the Mà Âri.
In 1569, Tachibana Dosetsu, a notable vassal of the à Âtomo, was attacked by the Mori. He was defeated and lost his castle. After Sà Ârin heard of this, he threatened the Mà Âri foothold in Buzen Province and attacked them at Tatarahama, forcing the Mà Âri to retreat and allowing him to retake Tachibana castle.
By this time, Sà Ârin controlled Bungo, most of Buzen, Chikuzen, and Chikugo, and had influence over Hugo, Hizen and Iyo, soon became known as the "Seven-Province Host of the à Âtomo".
In August 1578, SÃ Ârin was baptized as Christian and given the name Francisco. SÃ Ârin, with the urging of the Jesuits, ordered the destruction of Buddhist temples and Shinto shrines in his domain. He also ordered the forceful evictions of Buddhist monks and Shinto priests from their religious sites which were then reused as Christian structures. He forced his subjects to convert.
Soon after his conversion, Sà Ârin and a force of samurais traveled to Tsuchimochi in Hyà «ga with the aim of establishing a new society based on European Christian principles. Sà Ârin then sent three captains into the area and ordered them to destroy important Shinto temples, which were then burned. After his conversion to near his death, he and his armies attacked multiple other shrines and temples. Although Sà Ârin attacked temples and shrines before his conversion to Christianity for political or economic factors, an additional factor, an iconoclastic Christian one, was then intertwined with the other motives for desecration.
In 1578, Sà Ârin came into conflict with the Shimazu family led by Shimazu Yoshihisa, the only major daimyà  family remaining in control of significant portions of Kyà «shà «. Sà Ârin attacked Shimazu Takajo castle, but failed to capture the castle and lost at the Battle of Mimigawa.
In 1585, after Shimazu invasion of Chikuzen Province, Shimazu advanced and captured Iwaya Castle from Otomo's. Later, Sà Ârin along with the daimyà  of the Ryà «zà Âji clan, they appealed to Toyotomi Hideyoshi to aid in holding back the Shimazu, who were beginning to extend their influence over à Âtomo and Ryà «zà Âji lands. Though at first unsuccessful in enlisting Hideyoshi's aid, eventually the Shimazu took up arms against the à Âtomo, Shimazu seize Toshimitsu Castle, Funai Castle and defeated Sà Ârin at Battle of Hetsugigawa in 1586.
In 1587, Hideyoshi began his Kyà «shà « Campaign, in which he overtook the entire island, with the help of the à Âtomo and other families which voluntarily entered his service.
In 1587, Hideyoshi left Kyà «shà «, restoring the à Âtomo to their domains, taken from them by the Shimazu, and arranging a peace, with all three families officially subject to Hideyoshi and holding the domains, now officially Toyotomi lands, in trust. In June 1587, à Âtomo Sà Ârin died before this campaign was complete, and so it was his son, à Âtomo Yoshimune, who held the ancestral lands upon the defeat of the Shimazu.