Yo dejaría el nombre tal cual y añadiría la explicación, haciendo hincapié en que estas piedras son antigüedades:

Staddlestones (or staddle stones) are nowadays very popular as garden decoration.
In fact, they were originally used to support wooden barns above the surface so that rats and other vermin could not touch the corn in the barns. Most of the samples on today's market date from the 19th century but it is difficult to date them
precisely because staddlestones have been cut in the same way since the 16th century.
Their value has strongly increased...