His son, Haruyuki Katō, married Kazuko Kurosawa, the costume designer and daughter of Akira Kurosawa.
She had two children with Kurosawa: a son named Hisao and a daughter named Kazuko.
Akira Kurosawa | Kiyoshi Kurosawa | Kazuko Yoshiyuki | Kazuko Kurosawa | Kazuko Koike | Kazuko Hillyer International |