Sans Souci took its name from a grand house built on Rocky Point Road on land bought in 1853, by Thomas Holt (1811–1888), a wool merchant and politician, for his German wife. It was named after Sanssouci in Potsdam, Germany, the summer palace of Frederick the Great, King of Prussia. However, Holt thought that the area was too isolated so he built another house at Marrickville, overlooking the Cooks River, which he called The Warren. He bred rabbits for hunting and kept exotic animals, including an alpaca on this property. In the 1860s, Holt sold his Sans Souci property to William Rust, who turned it into a popular hotel, despite its isolation.