A fat book arrived from Bob Cowley in Australia today -- "Addendum 1" to his Soldiers, surveyors and selectors, which he compiled about 10 years ago, to which this was an update.
Quite a lot of it deals with Margaret Agnes Anne Green, and he's managed to collect a fair bit more on her brother Alfred, who also went to Australia, and on Alfred's wife Henrietta Goote, including the rather interesting information that she was born in Smyrna, Turkey. He also has death dates for many of Alfred and Henrietta's children.
Included in the package was a copy of the Canberra Historical Journal for September 2005, which has an article by Bob Cowley himself on Margaret Agnes Anne Green, concentrating on her role as a pioneer educationist in Queanbeyan, "The Queanbeyan teacher who was unlucky in love". And so she was. Her first husband, William Wilson, drowned in the Tuross River. She next married Alfred John Dawson Francis, who committed suicide. Her third marriage, to Walter William Thwaites, was bigamous, so she married him again a few years later.
Bob Cowley has a theory that Alfred John Dawson Francis was not actually the father of their fourth child, Louisa Francis. She was born eight months after his suicide in Sydney, and for the preceding four months he had lived apart from his family in Moruya. Louisa was adopted at the age of 18 months by Captain E.M. Battye, who had known the Green family in the Cape Colony and Canada, and Bob is investigating to see whether he could have been Louisa's real father.
In the mean time I've been trying to find a record of her marriage to William Wilson in the Cape. No luck so far, at least not in Grahamstown Cathedral in the 1850s, where her brothers Edward and Arthur Green were married. Perhaps she eloped, and married under a different name.