Matsumoto Kōshirō
Kōshirō, like other actors' names, is bestowed (or given up) at grand naming ceremonies called "shūmei" in which a number of actors formally change their names. Though the Matsumoto family is part of the Koraiya guild, there is a strong connection to the Naritaya guild and the Ichikawa family. It was not uncommon for members of the Matsumoto and Ichikawa families to take on names of both families over the course of their careers. The design of the Matsumoto family "mon", four flowers arranged in a diamond shape, is called "yotsu-hana-bishi" (四つ花菱).