Shigeyasu was at first a retainer of Ryûzôji Takanobu. He distinguished himself in battle at a young age and was given the name Jûemon by Takanobu not long before the death of the latter. Shigeyasu went on to serve Nabeshima Naoshige and accompanied him on the Korean Campaigns and in the Sekigahara and Osaka Campaigns. Afterwards he proved himself an able administrator, overhauling flood control and irrigation systems along the Chikugo river and elsewhere. He was also adept at castle construction and his civic accomplishments were studied long after his death.
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005