Hi Jimbo.We don't still know the maiden name of Ethel "Toodles" , and I am uncertain because in our "1954 thread" there is, in the Doubles of South African Championship, an Eileen Prescott Watermeyer. Ethel and Eileen were the same person?
I may be able to help out on this when I get back from vacation. I recently got a book of the history of tennis in South Africa. It has many maiden names for married players.