Okitsura was a son of Sugi Okifusa. He served the Ôuchi and acted as the shugodai of Chikuzen province. In 1530 he was tasked with leading an army against Shôni Sukemoto but was defeated by Ryûzôji Iekane. When Ôuchi Yoshitaka was overthrown and committed suicide, Okitsura followed suit and killed himself.
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005