After his service in Pennsylvania, Dickinson returned to Delaware, and lived in Wilmington. He was quickly appointed to represent Delaware at the Annapolis Convention, where he served as its president. In 1787, Delaware sent him as one of its delegates to the Constitutional Convention of 1787, along with Gunning Bedford Jr., Richard Bassett, George Read, and Jacob Broom. There, he supported the effort to create a strong central government but only after the Great Compromise assured that each state, regardless of size, would have an equal vote in the future United States Senate. As he had done with the Articles, he also carefully drafted it with the term "Person" rather than "Man" as was used in the Declaration of Independence. He prepared initial drafts of the First Amendment. Following the Convention he promoted the resulting Constitution in a series of nine essays, written under the pen name "Fabius".