Hi JulianK and PaulGB (my 4th cousin),
Susannah Andrews is my third great grandmother. She was in the Yarra Bend Asylum, which closed almost a century ago and was replaced by a new asylum just a few hundred metres away (Kew Asylum) which only closed in 1988 and is now a housing development. It's about a 20-minute drive from where I live in suburban Melbourne. Here's the link to the Yarra Bend Asylum
https://en.wikipedia.org/wiki/Yarra_Bend_AsylumI've tagged mentions of Susannah on Australia's national archives website Trove. You should find the links here at
https://trove.nla.gov.au/search?l-usertag=Susannah%20Andrews or you can probably just search the newspapers for Susannah Andrews or Susannah Brandon. There are some really interesting articles there about the asylum and about Susannah. You can find plenty about her son (my second great grandfather) George Brydon Brandon there too if you click on this link
https://trove.nla.gov.au/search?l-usertag=George%20Brydon%20Brandon He was a pretty interesting man, one of Melbourne's first school teachers. When I was a young boy, I remember many visits to see his daughter, my great grandmother Ada, in her nursing home. A delightful old lady who was always giving me caramels that made my teeth stick together!
One thing that intrigues me is that an article at
https://trove.nla.gov.au/newspaper/article/63614966/5567804 is dated 1890 and tells of a meeting with 102 year old Susannah Brandon, yet her gravestone in Melbourne General Cemetery says she died in 1875! I can't figure that one out, but if it is OUR Susannah, then there is a wonderful illustration of her on this page. The article at
https://trove.nla.gov.au/newspaper/article/87732655 claims Susannah died in 1891
Another Trove article includes this quote "There is, for example, an old lady with the blackest of skins and the whitest of teeth, of whom it is told that years ago, in Jamaica, she was the connubial partner of one who had wealth at command, and whose mansion was dignified with no less a title than that of " Marble Hall" If the story be true, she has seen changes in her time." You can find that one at
https://trove.nla.gov.au/newspaper/article/5737420I hope these links help you answer some of your questions. I'm assuming they're also available to people who live outside Australia, but if they don't work for you, let me know as I can download PDFs of the articles on Trove and get them to you another way.
Regards,
Garry Chapman
Melbourne, Australia