Browsing: Papers of John Adams, Volume 2

6. Catharine Macaulay's brother, John Sawbridge (1732?–1795), a founder of the Supporters of the Bill of Rights, had served as an alderman for London since 1768. Later in 1774, he was returned as a member of Parliament for the city ( DNB ). Rev. Ewin may have been the notorious Dr. William Howell Ewin (1731?–1804) of Cambridge ( DNB ). Dr. Hugh Williamson (1735–1819) of Pennsylvania had sailed to Europe from Boston shortly after the Tea Party of Dec. 1773. On his arrival in England, he struck up a friendship with Franklin and became his scientific collaborator ( DAB ).