My grandmother's sister Margaret (Maude) McGuire married John Cromwell Cox in Ottawa in 1900. J. Cromwell Cox, Maud McGuire his wife, and her sister Catherine McGuire are in the 1901 Ottawa census. J. Cromwell Cox (son of Robert Montgomery Cox of Robt. Cox and Co, lumber exporters) is listed in the directories in Ottawa until 1922. I believe I found him in the 1930 California census with another wife, Myra. They immigrated and were married about 1923. My question is: what happened to Margaret McGuire Cox? Her brothers obituary in 1935 does not mention her among his siblings and none of my 2nd cousins still in Ottawa remember hearing anything about her. I am assuming she died sometime between 1901 and 1922. If anyone has access to the Ottawa death records index, I would appreciate a lookup for Margaret McGuire Cox, wife of John C. Cox. Any other ideas about how to find information about her would be appreciated as well. Mary Dain