The patent was signed by President George Washington, Attorney General Edmund Randolph, and Secretary of State Thomas Jefferson.The other U.S. patents issued that year were for a new candle-making process and Oliver Evans's flour-milling machinery.Hopkins also received the first "Canadian" patent from the Parliament of Lower Canada in 1791, issued "by the Governor General in Council to Angus MacDonnel, a Scottish soldier garrisoned at Quebec City, and to Samuel Hopkins, for processes to make potash and soap from wood ash.In the spring of 1765, Hopkins married Parrish's sister-in-law, Hannah Wilson, and together they raised six children in Philadelphia.Circa 1800, for financial reasons, Hopkins and his wife moved to Rahway, New Jersey, to live with their daughter Sarah and son-in-law William Shotwell.
