"Resolved that the application of Mr. R. W. Jones for liberty to name a new street off Donegall Pass ' Walnut Street' be granted provided there is no other street of that name". (2nd December 1868). According to Patton, the original Walnut Street was developed between 1868 and 1874 and ran only to Ormeau Street and terminated at Cromac Lodge.
There is a cluster of streets off Donegall Pass which were named after trees: Elm Street, Oak Way, Pine Way, Walnut Street/Court/Mews.