Finding Mary Fowle of Londonderry

Yesterday I cited Jane Merrill’s Sex and the Scientist: The Indecent Life of Benjamin Thompson, Count Rumford (1753–1814), the latest and frankest biography of the scientist, statesman, soldier, and seducer.

That book quotes testimony from Mary Fowle of Londonderry, New Hampshire, about how Thompson had an affair with Mary (Dill) Thomas, first wife of the Boston printer Isaiah Thomas.

Merrill distinguishes that woman from the Mary Fowle whom Isaiah Thomas married in 1779, whom she identifies as both the printer’s cousin and the widow of his old master, Zechariah Fowle.

Isaiah Thomas’s second wife named Mary was indeed a cousin, having been born Mary Thomas on 9 June 1750, according to genealogy published in “The Portraits of Isaiah Thomas” by Charles Lemuel Nichols.

However, that cousin Mary didn’t marry Zechariah Fowle. Her mother, Rebecca (Bass) Thomas, did. The older printer died in Portsmouth in 1776. Rebecca (Bass Thomas) Fowle, twice widowed, died in Worcester in 1803 and was buried in her son-in-law’s family tomb.

So who was Mary Thomas’s first husband? Boston vital records show that the Rev. John Lathrop married Isaac Fowle and Mary Thomas on 11 May 1769. The Thomas and Fowle family genealogies say they had two daughters, who both died young:

• Rebecca T[homas?]. (4 Feb 1770–6 Dec 1773 in New York)
• Dorothea Whitmarsh (5 Nov 1771–10 Sept 1772)

Isaac Fowle reportedly died in 1777 while serving in the Continental Army.

That same year, Isaiah Thomas leased his financially stressed press and newspaper to his come-of-age apprentice, Anthony Haswell, and moved with his children to “a small farm in Londonderry, New Hampshire,” according to the biography published with the second edition of his History of Printing in North-America. He also initiated a divorce from his first wife.

A couple of years later, Isaiah came back and took over the print shop again. Worcester’s vital records state that on 26 May 1779 Isaiah Thomas married “Mary Fowle of Londonderry” in Boston. Since 1777 he had been a divorcé with three children, his cousin Mary had been a childless widow, and there was a war on. Mary might well have been keeping house for Isaiah in New Hampshire even before they married.

Thus, the Mary Fowle of Londonderry who provided testimony for Isaiah Thomas in his divorce case in 1777 was:

• his cousin
• a stepdaughter of his former master
• his future wife

Isaiah and Mary (Thomas Fowle) Thomas had no children. She died at Worcester in 1818, and he remarried again the next year. The picture above is the pastel portrait of Mary in the collection of the American Antiquarian Society.