Hi Rowlandson,
I am also looking as to when Ann Sophia (known to her family as Sophia) Waller was sent to Rhodesia (as it was in the early 1900s). I have been told that the son of the house and Sophia fell in love, and consequently were sent away!!
I have copies of photos of Sophia, and her two daughters Elsie (my grandmother's name) and Joyce.
Sophia's parents were certainly Thomas Waller and Fanny Peckover.
But, unfortunately like you I have not been able to locate a Marriage certificate.
I am having difficulty in finding in the 1911 census for Arthur Congdon, that shows on Annie Sophia Congdon's Death Notice.
I have noticed that the first child listed is a Frederick Arthur Robert Congdon - may be a clue there!!
Regards,
Cheryl