Using some white-pages search websites, there was no "Bartoll" or "Bartol" currently listed in Marblehead, Salem, or Lynn.
This could be him—born 12/24/1786 in Marblehead, thus 17 years old when this job was done; more likely it was his father, "Samuel Bartol Drummer 1776 W 6 Painter," 39 years old at that time.
Let's stop now before going farther down the geneological rabbit-hole. A road-trip to Marblehead's cemeteries would be interesting.
|Marblehead Harbor Master|
Given the scale of the Marblehead Harbor Master's current boat, that doesn't sound unreasonable.
FYI: Here is Harvard's fascinating cache of "customs documents, correspondence, and United States Treasury Department circulars sent to the Marblehead Custom House, dated from 1789 to 1878."