“Dimensions Architects have advised that Harberton was proposed as the new streets are located off Harberton Park and the developer wishes to retain the name “Harberton” for the entire development”. (People and Communities Committee, minutes, 8th December, 2015).
"WILLIAM WALLACE LEGGE (1841-68), of Malone House; on whose decease, the property was acquired by Lord Harberton through marriage. Harberton Avenue, Drive and Park, Belfast, are all named after the 6th Viscount Harberton, who owned the land." (from Lord Belmont In Northern Ireland blog)