He was a partner from 1699 to 1736 with John Dolbeare in Boston MA as DOLBEARE & JACKSON.
Boston MA, 1736: jackson's estate was appraised at more than £30,000. The inventory included new goods of English and his own manufacture, used pewter, silver, household furnishings, and a complete shop including 1500 pounds of casting molds. 11
Jonathan married Mary Salter on 26 Jun 1700 in Boston MA. (Mary Salter was born on 28 Jan 1673 in Boston MA.)