Early Jewish families in Australia's history, whose descendants remain Jewish today.
Some of them were Tasmanian convicts, eg Abraham Rheuben (spelled Reuben in Australian convict records). There is a large study on to delve into the lives of these particular convicts at:
One of the infamous characters in this set of people was Isaac Solomon(s), aka Ikey Solomon, aka Faigin, from "Oliver Twist".
See also https://www.geni.com/projects/The-Jewish-Faith-in-Colonial-Australia-1788-to-1901/17273