Australian Princess Her Highness Princess Melikoff aka Pauline Curran 1893 - 1988

 HH Princess Melikoff was born as Pauline Curran into a Tasmanian family that benefited greatly as part-inheritors of the Tattersall's fortune.
When Pauline was old enough to do as she pleased - this was when her father had passed away and she was allegedly past her first bloom of youth *ahem* - she found herself a handsome Russian aristocrat Prince Maximilian Melikoff and put on a Royal Wedding in Hobart in 1926 where police had to halt traffic for three hours.

Again, Netflix, here's a true Royal wedding story.

Princess Melikoff established a trust fund on her death which supports marine conservation and rescues of stranded marine mammals.

Further Reading - 

Princess Melikoff

Biography

How charitable trusts impact the community

The King of Iceland, founder of Hobart, Jorgen Jorgensen 29 March 1780 – 20 January 1841

 Jorgen Jorgensen was talented in many ways; sailor, spy, seditionist and silly bugger.

He was present at the foundation of Hobart, witnessed the Battle of Copenhagen, arrested the Danish Governor of Iceland then declared himself the Protector of Iceland - which lasted barely 2 months before he was voted off the island and back to England.

He managed to get employed by the British Intelligence Service where he translated documents and wandered about as a spy during the Napoleonic Wars, but then ran into a little trouble where he was accused of theft and voted back to an island , Tasmania.

The Convict King is immortalised in stone relief on the beautiful Ross Bridge with his crown.

Further reading -

Jørgen Jørgensen: The Convict King