Nagamasa was a son of [[Yasui Shigetsugu]] and a grandson of [[Asano Nagakatsu]] and was adopted into the [[Asano clan|Asano]] family. He later became the brother-in-law of [[Toyotomi Hideyoshi|Toyotomi Hideyoshi's]] wife and accompanied Hideyoshi on his campaigns in western Honshu (1577-82). He acted as a negotiator to [[Tokugawa Ieyasu]] following the Komaki Campaign ([[1584]]) and following his involvement in the Odawara Campaign ([[1590]]) was given a 200,000-koku fief at Fuchu (Kofu) in [[Kai province]] ([[1590]]). That same year he was tasked with carrying out land surveys in [[Dewa province|Dewa]] and [[Mutsu province|Mutsu]] Provinces. He went on to serve in the Korean Campaigns, his time there highlighted by the long siege of Ulsan ([[1597]]-[[1598|98]]) he endured along with [[Kato Kiyomasa]]. He was named one of the San-Bugyô in [[1598]] by Hideyoshi, though with his son Yukinaga he sided with Tokugawa Ieyasu during the [[Sekigahara Campaign]] ([[1600]]). | Nagamasa was a son of [[Yasui Shigetsugu]] and a grandson of [[Asano Nagakatsu]] and was adopted into the [[Asano clan|Asano]] family. He later became the brother-in-law of [[Toyotomi Hideyoshi|Toyotomi Hideyoshi's]] wife and accompanied Hideyoshi on his campaigns in western Honshu (1577-82). He acted as a negotiator to [[Tokugawa Ieyasu]] following the Komaki Campaign ([[1584]]) and following his involvement in the Odawara Campaign ([[1590]]) was given a 200,000-koku fief at Fuchu (Kofu) in [[Kai province]] ([[1590]]). That same year he was tasked with carrying out land surveys in [[Dewa province|Dewa]] and [[Mutsu province|Mutsu]] Provinces. He went on to serve in the Korean Campaigns, his time there highlighted by the long siege of Ulsan ([[1597]]-[[1598|98]]) he endured along with [[Kato Kiyomasa]]. He was named one of the San-Bugyô in [[1598]] by Hideyoshi, though with his son Yukinaga he sided with Tokugawa Ieyasu during the [[Sekigahara Campaign]] ([[1600]]). |