He was baptized at Dorchester, MA 10 Dec 1648.
Known as "The Ingenious Mathematician and Printer"
He graduated from Harvard in or around 1667. He opened the first printing office in Boston in 1675 and printed the first book in Boston in 1676.
Son of Hopestill Foster and Mary Bates Foster of Dorchester, Mass.
Mathematicians & printer
MR. JOHN FOSTER
AGED 33 YEARS DYED SEPT.R 9th
Information on this grave can be also found in the following book. Graven Images New England Stonecarving And Its Symbols, 1650-1815 by Allan I. Ludwig. (page 89)