Hirohito Yamato was born 29 April 1901 in Tokyo, Japan and died 7 January 1989 Tokyo, Japan of unspecified causes. He married Kōjun 26 January 1924 in Tokyo, Japan.
Children
| Name | Birth | Death | Joined with |
| Akihito | 23 December 1933 Tokyo, Japan | Michiko Shōda | |
| Shigeko Higashikuni | |||
| Sachiko, Princess Hisa | |||
| Kazuko Takatsukasa | |||
| Atsuko Ikeda | |||
| Masahito, Prince Hitachi | |||
| Takako Shimazu | |||
Siblings