Tibet:

In 1877, the Protestant James Cameron from the China Inland Mission walked from Chongqing to Batang in Garze Tibetan Autonomous Prefecture, Sichuan province, and "brought the Gospel to the Tibetan people." Beginning in the 20th century, in Diqing Tibetan Autonomous Prefecture in Yunnan, a large number of Lisu people and some Yi and Nu people converted to Christianity. Famous earlier missionaries include James O. Fraser, Alfred James Broomhall and Isobel Kuhn of the China Inland Mission, among others who were active in this area.

Please answer a question about this article. If the question is unanswerable, say "unanswerable". Who was James O. Broomhall and Alfred James Fraser?
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