He took an active part in suppressing Shays' Rebellion, was the author of the Laco letters (1789), and served the United States government as navy agent from May 11 to June 22, 1798.

He began work as a merchant in the counting room of Deacon Smith of Boston.

Along with his fellow Massachusetts delegates Holten and Gorham, he signed a protest against the denial of Elbridge Gerry's right in calling for ayes and nays.

[1][2]: 52  He was part of a group of Federalists called the Essex Junto, which included his cousin George Cabot and Theophilus Parsons.

He took an active part in suppressing Shays' Rebellion and served as lieutenant colonel in the Boston regiment.

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