[3] Tullie Cornthwaite Wollaston (1863–1931), known for his discovery and cultivation of the claret ash tree,[4] bought a section of land in 1904, another in 1911, and further plots as they became available.
[3][7] Downer planned and laid out the garden, which included a series of terraces and flights of steps from the house down to a circular pool at the lower level.
Claret ash, deodar cedar and copper beech had already been planted by Wollaston, and Downer added liquidambar, cypress and lime trees.
[3][8] In 1964 the new South Eastern Freeway route cut through the water meadow and deer park, and at this time the state government bought the property.
[10] The members of an Australian cult, the Ideal Human Environment (IHE)[11] headed by James Gino Salerno ("Taipan"),[12] purchased the two titles (accommodation block and main 17-roomed house) for A$2.4 million in 2001.
It was bought by Port Adelaide Football Club director Alex Panas, who said that although the Salerno family had done a wonderful job of restoring the mansion, which had been a "huge mess" when they bought it, he planned to work with heritage experts to ensure the grandeur of the property was restored.