"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)
"Submitted application from Mr. John Seeds, 7 Donegall Square West, on behalf of Viscount Harberton, to name new streets on the Harberton Estate, situate off Balmoral Avenue and Upper Malone Road, as follows:– Greenview Lane, Harberton Park, Bristow Lane, Pomeroy Lane, Drummond Lane, Trasnagh Lane, Braddock Lane, and Strangford Lane. Resolved – That the names suggested be approved of. (16th November 1926).
The City Surveyor informed the Committee that Harberton Park would ultimately extend from Balmoral Avenue to Upper Malone Road, but as the development was not completed, confusion was caused by each end of the thoroughfare being known as Harberton Park. He suggested that in the meantime the portion from Upper Malone Road should be known as Harberton Park, Malone, and the Committee agreed to the suggestion. (13th December 1938).