[2][3] In 1775–76, before his war service, he was a timber merchant living in Quebec and sustained financial losses supporting the revolution.

[8] On April 15, 1780, his brother, Charles Hay, was arrested by Frederick Haldimand, governor of the Province of Quebec, and not released until May 2, 1783.

[7] On June 24, 1780, Hay was appointed by George Clinton, the first governor of New York, as the state agent to supply provisions for the Continental Army.

[19] Dorchester's speech was viewed by many as a potential war provocation from Britain and one of the factors leading up to the Jay Treaty negotiations.

[20] During the same year, the Democratic Republican Society of Chittenden County was founded in Burlington, allegedly by Udney Hay.

The founder of that society, and sole author of their late proceedings [Udney Hay], perhaps you are apprized, is not an inhabitant of this state, but resides, generally in the city of New York.

If you have not read the work from which the quotations are made, you might be led, from the detached sentences there cited, to believe that it contains the principles of anarchy instead of the principles of government—principles wholly subversive of a representative democracy…[21]In 1795, Hay served as a second for Commodore James Nicholson in New York during the lead-up to a proposed duel between Nicholson and Alexander Hamilton.