There are two sides to every story- if you read online comments from Sherlie Matthews (Shirley Matthews was a Canadian based R & B Singer) , she says she recorded the song in the late 60's.
On the other hand, if you read the liner notes to the Kent CD "The Mirwood Soul Story", the single was "released" around the time a certain SS had access to the Mirwood master tapes- they commented it appears to be a new recording .