Please note that this is the Narutopedia's article on the member of the Sarutobi clan. If you are looking for the article on the member of the Uchiha clan named after him then you should head to Sasuke Uchiha.
Sasuke Sarutobi (猿飛サスケ, Sarutobi Sasuke) was a renowned shinobi from Konohagakure's Sarutobi clan.
During a conversation with
Biwako Sarutobi and Kushina Uzumaki, Mikoto Uchiha noted that she named her son after him in the hopes that the boy would become a splendid ninja just like his namesake.
He was only mentioned in a chapter or episode, so nothing is known of his abilities. However, he was a powerful ninja as Mikoto stated that she wanted her son to be as powerful as him.
Sasuke Sarutobi is the name of a legendary ninja who was a member of the Sanada Ten Braves, a group of ninja that served under daimyō Yukimura Sanada during Japan's Warring States period.
Naruto chapter 500, page 11