Iro (old retainers) in the Kansei era refers to politicians who led the bakufu such as Nobuaki MATSUDAIRA (the lord of the Mikawa-Yoshida domain), who were chosen by Sadanobu MATSUDAIRA after his downfall.
寛政の遺老（かんせいのいろう）とは、寛政の改革を主導した松平定信失脚後、定信によって取り立てられた松平信明(三河吉田藩主)ら幕政を主導した政治家たちのことを指す。