Monarchy of Australia (Arm of the Singularity)

The monarchy of Australia is a form of government in which a hereditary monarch is the sovereign. Australia is a constitutional monarchy, largely modelled on the Westminster system of parliamentary government, incorporating features unique to the Constitution of Australia.

The present monarch is Alexander V, styled King of Australia, who has reigned since 18 February 2189.

List of monarchs
All portraits show the appearances of the monarch around the time of their coronation.

House of Windsor (1917 — 2051)
The house name Windsor was adopted in 1917, during World War I. It was changed from Saxe-Coburg-Gotha because of wartime anti-German sentiment in the United Kingdom.

House of Yarralumla (2051 — present)
After adoption of the Home Monarchy Amendment Act by Parliament and successful referendum in 2050, former Governor-General Xavier Allyson was proclaimed King of Australia, replacing William V of the United Kingdom. Before 2051, Australian monarchs were all British as part of the Commonwealth realm arrangement at the time held between Britain and Australia as well as several other countries.

After Allyson's coronation, he became known as Alexander I, and he began the Yarralumla dynasty, named after the official residence of the King (earlier Governor-General), Yarralumla (formerly Government House — Yarralumla was a common name for the residence and was officially adopted after Alexander I's coronation) as well as in honour of the Aboriginal natives, despite being of a family of European descent.