Sans Souci Park occupies the site of the house and grounds of Sans Souci, for many years the residence of Robert Lindsay, a member of the Lindsay family of Belfast, and senior partner in the firm of Lindsay, Thompson & Co., Mulhouse Works, a firm now out of existence. "Sans Souci" (without care) was the residence of Frederick William II (Frederick the Great), King of Prussia (1740-1786). The first residence of this name was in a quiet secluded spot. The second and more famous place of "Sans Souci" was built by Frederick after the Seven Years' War, which ended in 1763". (Belfast Street Names. John J. Marshall)
The 1861 Belfast Street Directory contains this reference: “Robert Lindsay, Sans Souci” below the title: “Malone Road Old”. According to Dean there was a lodge (pre-1857) and house here which gave the name Sans Souci.
"Resolved — That on the application of the owners, per Mr. R. T. Martin, Solicitor, a new street on their property situate off Malone Road be named Sans Souci Park". (23rd December 1901).