I call him Mr. Zero because genealogy should be fun.
I have not seen another gravestone with this same first name which is rooted in Hebrew as Zerubbabel.
His slate gravestone features the "undifferentiated" face of the time and is not his portrait although the features and hair style certainly give that impression, don't they? It has withstood the harsh New England weather amazingly well.
I discovered that many gravestones from the Old Common and Springhill (in Marlborough) cemeteries are in the Farber Gravestone Collection which confirms the excellence of the workmanship of the carvers.
Zoroable's gravestone details can be examined more closely here.