Shigezane was a son of Date Sanemoto and was at first known as Tôgorô. After distinguishing himself at the Battle of Hitadori (1585) he was given Nihonmatsu castle and an income of 38,000 koku. He played an active role in the defeat of the Ashina family in 1589. In 1595, for reasons unclear, he suddenly fled to Mount Koya but re-entered Masamune's service in 1600 and went on to fight at Osaka castle. He later produced a written work on the Date family.
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005