The townland of Ballymacarrett had been bought by the First Marquess of Donegall in 1787 for £25,000 from Barry Yelverton who in his turn had bought it six years earlier from the Pottinger family for £18,113/5/0d. The first Marquis of Donegall by his will dated August 7, 1795, left Ballymacarrett to his second son, Lord Spencer Chichester; whose son, Arthur Chichester, was in 1831 created Baron Templemore, which title gives Templemore Avenue its name" (Belfast Street Names. John J. Marshall). The title of Baron Templemore comes from a parish in the NW Liberties of Londonderry.
The Belfast And Province Of Ulster Directory 1865 contains the following listing: ”TEMPLEMORE PARK. Off Ballymacarrett New Road. Six houses in course of erection. Twelve small houses”.
The Belfast And Province Of Ulster Directory 1870 contains this: “TEMPLEMORE AVENUE BALLYMACARRETT Albert Bridge Road to Castlerengh St, Vacant ground Vacant, four houses, three stories Braithwaite, Robert, supervisor Inland Revenue Vacant ground, Hill, James, spirit dealer”.
Templemore Avenue “On the application of the owners of property, your committee have renamed ‘Templemore Street’ 'Templemore Avenue’." Belfast Weekly News - Saturday 05 August 1882.
"Templemore Avenue was designed in the early 19th century as part of a plan of urban development, built on the grid system typical of French or American cities" (Haines, East Belfast Images of Ireland, p 111).