• Born: 1708, Suffolk MA
• Marriage (1): Rachel Thwing on 22 Jun 1730 in Boston MA
• Marriage (2): Bathsheba Thwing on 6 Aug 1747 in Boston MA
• Died: 8 May 1767, Boston MA

  General notes:

Engraver

  Events in his life were:

• Apprenticed circa 1722-1727 to William Burgis in Boston MA ⁹
  

• He worked circa 1727-1767 as an engraver in Boston MA
  Comparisons of his engraved prints with designs found on Boston silver suggested he did work for several silversmiths. He is known to have engraved a copperplate for printing clock dials for Preserved Clapp. The watchmaker Gawen Brown shared shop space with Johnston between 1749 and 1752. ⁹

• Master to John Greenwood c 1740 in Boston MA. ⁹

• Apprenticed about 1753 to Benjamin Johnston in Boston MA ⁹
  

Thomas married Rachel Thwing on 22 Jun 1730 in Boston MA. (Rachel Thwing was born on 5 Jul 1705 in Boston MA.)

Thomas next married Bathsheba Thwing on 6 Aug 1747 in Boston MA. (Bathsheba Thwing was born on 19 Jan 1725 in Boston MA and died in Jun 1792 in Weston MA.)