John Jeffries (1796-1876) was an ophthalmic surgeon and co-founded the Massachusetts Charitable Eye and Ear Infirmary. John Jeffries John Jeffries (5 February 1745 – 16 September 1819) was a Boston physician, scientist, and a military surgeon with the British Army in Nova Scotia and New York during the American Revolution. He is best known for accompanying Jean-Pierre Blanchard on his 1785 balloon flight across the English Channel. Born in Boston, Jeffries graduated from Harvard College and obtained his medical degree at the University of Aberdeen. Dr. Jeffries played a large role in the trial for the Boston Massacre as a witness for
History of ballooning Tytler on August 27, 1784. Tytler flew his balloon from Abbeyhill to Restalrig, then suburbs of Edinburgh. He flew for ten minutes at a height of 350 feet. The first manned balloon flight in England was by Signor Vincent Lunardi who ascended from Moorfields (London) on 15 September 1784. The first British woman to ascend was Letitia Ann Sage, who ascended in one of Lunardi's balloons in June 1785. Jean-Pierre Blanchard and Jeffries flew from Dover to Calais in 1785. In the same year, a Mr Arnold went up from St Georges Fields (London), but came down in the River