[2] After his wartime service, move to what became the state of Kentucky with his father and most siblings, and marriage in Philadelphia, Pennsylvania discussed below, James Marshall returned to Virginia in 1795.

[2] Marshall volunteered for the 1st Virginia Regiment,[1] commanded by Alexander Hamilton,[2] of the Continental Army in 1779 during the American Revolutionary War,[1] enlisting as a private and receiving a promotion to lieutenant.

[1] Marshall bore a conspicuous part in the discussions concerning the “Spanish conspiracy.”[2] His statement that Don Diego de Gardoqui, the Spanish minister at Washington, had been in communication with John Brown looking to the withdrawal of Kentucky from the United States, was bitterly denounced by James Brown, afterward minister to France, which led to a challenge from Marshall, but the duel was prevented after the parties reached the ground.

President George Washington authorized him as minister plenipotentiary to become the agent of the United States to negotiate for the release of the Marquis de Lafayette, who was then a prisoner in Austria.

[2] Marshall would buy out Lighthorse Harry Lee and thus had a double share of the northern neck propriety lands, and would build a house he called "Happy Creek" on them, although it would burn down long before the American Civil war.

[7] President John Adams nominated Marshall on February 28, 1801, to the United States Circuit Court of the District of Columbia, to a new seat authorized by 2 Stat. 103.