Chozaburo Kusumoto

Translated from the corresponding article in the Japanese Wikipedia. May be expanded

Kusumoto was born in the village of Shichikama, later incorporated into the town of Saikai, in Nishisonogi District, Nagasaki onMarch 1871, or the 20th day of the first month by the old calendar then still in use. The second son of Kusumoto Gansho, he lost his father at an early age and was raised by his mother and grandfather, who himself died in October 1882, leaving his mother to raise four children alone. However, with her support he graduated from a private junior high school in Omura in 1889 and from its First Higher School in 1896. In December 1900, he graduated from the medical school of Tokyo Imperial University.

Source: Wikipedia