Another context of the term or name Yatsuhashi is in the gilded screens of Ogata Korin (1658-1716), one of many who referenced the Ise Monogatari. Apparently, it was a favorite subject as he depicted it in his lacquer work as well (Tomoko Sato).
Sato says he was the son of a wealthy merchant who ran the top fashion house in Japan at the time. It wasn’t until later, after the family business went into decline, did he manifest his talents and developed Korin patterns for kimono. Even later, in the last 15 years of his life, he produced his masterpieces, the Yatsuhashi series, being among them.