According to the IHTA, Robert Street which features in the 1813 BSD was later renamed Exchange Street West. The Exchange part of the name comes from its proximity to the Belfast Exchange which was built in 1769 at the "Four Corners" - the junction of Bridge Street, Waring Street, North Street, Rosemary Lane; the Assembly rooms were completed in 1777.
Further Information
Unnamed 1789 (Lawson). Robert Street 1813 (BSD), 1819
(Bradshaw plan), 1822 (Benn plan 1), c. 1830 (OS).