When Alcy Hopkins was born on 8 September 1746, in Scituate, Providence, Rhode Island, United States, her father, Jabez Hopkins, was 30 and her mother, Bethiah Hopkins, was 33. She married John Williams on 23 February 1774, in Gloucester, Providence, Rhode Island, United States. They were the parents of at least 14 sons and 2 daughters. She died on 24 January 1814, in New York, United States, at the age of 67.