''Cite for all this is by Joseph Morton, In the Sea of Sterile Mountains: The Chinese in British Columbia", which despite its title is more about the careers of the politicians of the age, and an explanation of the issues of the time - to which the "Chinese question" was central (their terms were a bit nastier so I won't use them, even in quotes).  The book's a bit out of date, and it makes the usual earnest politically-correct nods and snipes, but it has a lot of information and some very interesting by-the-way biographers of politicians of the time, including Walkem.   

 Walkem's offspring should probably get their own pages, or a listing here on their sire/grandsire's page.