"The purpose of the Stone was protect the gable end of the building from damage from passing carriages, carts, etc. The original Stone was removed in 1928 when the Simm's Lane area was being re-surfaced. Today the shop is owned by the Guerin family."

The French call these stones 'Chasse-roue' or 'Bouteroue'. There was a similar stone outside my grandfather's grocery shop with metal spike on top to discourage corner boys fron sitting on it. Alas it was removed sometime in the last 50 years.
Nobody ever wrote a song about this particular stone.