There was an advert in the Northern Whig - Saturday 18 April 1885 for Ardenlee House. Ardenlee House featured in The Belfast Directory for 1887. Ardenlee Avenue featured in the 1895 Belfast And Province Of Ulster Directory. It is likely the Ardenlee street names are named for Ardenlee House. This was a common practice throughout Belfast.
"Resolved — That on the application of the owners (The Martin Estate Co. Ltd.) the new street on their property, situate off Ardenlee Avenue, next Cregagh Road, be named Ardenlee Street". (12th August 1913).