The Surveyor handed in the following names of streets as altered which was approved of: [the newspaper report in the Ulster Examiner and Northern Star - Tuesday 02 December 1873 provided this additional information: “As duplicate names of the following streets at present exist in the borough, the committee recommend the Council to adjust them as follows”: Milford Street, illegally named, to be called Stormount Street; Sidney Street, at Tennent Street, Sidney Street West; Hopes Court, its proper name is Hopps Court; Brook Street, Albert Bridge Road, Calvin Street; Boyds Court, at Nile Street, Nile Court; Chapel Lane, Newtownards Road, Seaford Street; Cross Street, at Hamill Street, Hamill Street Place; Donaldson's Court, Union Street, Union Street Place; Frances Street, Short Strand, Moira Street; Williams Place, Henry Street, Wensley Street. Wheelers Court, Carrick Hill, Carrick Court. Grafton Street, Templemore Street, Thorndyke Street; Church Street, Newtownards Road, Church Street East. (TIC, 19th Nov 1873).
First reference to Seaforde Street in 1877 The Belfast And Province Of Ulster Directory.
"That on the application of the owner Mr. S. Lowry of 62 Madrid Street, a new street on his property situate off Seaford Street be named Lowry Street". (28th September 1892)
Possible surmise: https://www.seafordegardens.com/history/family-history/