Author
Hoang Cao Khai
viceroy of Tonkin (1850–1933)
Their life
Hoàng Cao Khải was born in 1850 in Đức Thọ District, according to the reference, which gives no further detail about his early life. He died in 1933, but the reference does not say where.
He served as viceroy of Tonkin, known locally as Bắc Kỳ. At the time, Tonkin was the northernmost of the three parts of Vietnam under French colonial rule, and the viceroy's post placed him within that colonial administration.
He is best known for helping French authorities track down Phan Đình Phùng, the leading Vietnamese revolutionary of his era. This role is the main reason he is remembered in the reference.
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