How was Western Australia first settled?

Edmund Lockyer was the one who led an expedition to formally claim Western Australia for Britain in 1826 (it had been claimed as British possession in 1791, by George Vancouver). He established a military base at King Georges Sound which originally bore the name of Frederick's Town: it was later renamed Albany. Thus, Albany was the site of the first European settlement in Western Australia.

In 1829, Captain Charles Fremantle was sent to take formal possession of the remainder of New Holland which had not already been claimed for Britain under the territory of New South Wales. This was so that the French could not make a claim on the land.

On 2 May 1829, Captain Fremantle raised the Union Jack on the south head of the Swan River, thus claiming the territory for Britain. The colony of Western Australia was proclaimed on 8 June 1829, and two months later, Perth was also founded.