Keiho Soga was born in 1873.
Keiho was created in 1999.
Soga no Iruka died in 645.
Soga no Emishi died in 645.
Soga Shōhaku died in 1781.
Soga no Umako died in 626.
Soga no Iname died in 570.
Tiyo Soga died in 1871.
Machiko Soga died on May 7, 2006 at the age of 68.
Taira Fukuda has written: 'Keiho kaishakugaku no shuyo mondai' 'Keiho no kiso chishiki'
Soga no Emishi was born in 587.
Soga Shōhaku was born in 1730.