In response to your Where in Y.T. - Whitehorse (Arrived in Yukon summer of 1951. Came up on Boat from Vancouver, B.C. to Skagway, Alaska and then by the White Pass & Yukon Railway to Whitehorse, Yukon. Lived in Whitehorse until at least 1968?)
Not sure what you mean by "what name /s" by Jim Smith?
Don't know when Catherine got married. All I know is that she was married and living in Alberta per "the Canadian Phone and Address Directories, 1995-2002 at 7712 - 109 Street, NW, Edmonton, Alberta "
This is all I have.