Ethan Allen in the context of "New Hampshire Grants"

The Green Mountain Boys were a militia organization established in 1770 in the territory between the British provinces of New York and New Hampshire, known as the New Hampshire Grants and later in 1777 as the Vermont Republic (which later became the state of Vermont). Headed by Ethan Allen and members of his extended family, it was instrumental in resisting New York's attempts to control the territory, over which it had won de jure control in a territorial dispute with New Hampshire.

Some companies served in the American Revolutionary War, including notably when the Green Mountain Boys, led under the command of Ethan Allen while being assisted by Benedict Arnold, captured Fort Ticonderoga on Lake Champlain on May 10, 1775, and invaded Canada later in 1775. In early June 1775, Ethan Allen and his then subordinate, Seth Warner, induced the Continental Congress at Philadelphia to create a Continental Army ranger regiment from the then New Hampshire Grants. Having no treasury, the Congress directed that New York's revolutionary Congress pay for the newly authorized regiment. In July 1775, Allen's militia was granted support from the New York revolutionary Congress.

The capture of Fort Ticonderoga occurred during the American Revolutionary War on May 10, 1775, when a small force of Green Mountain Boys led by Ethan Allen and Colonel Benedict Arnold surprised and captured the fort's small British garrison. The cannons and other armaments at Fort Ticonderoga were later transported to Boston by Colonel Henry Knox in the noble train of artillery and used to fortify Dorchester Heights and break the standoff at the siege of Boston.

Capture of the fort marked the beginning of offensive action taken by the Americans against the British. After seizing Ticonderoga, a small detachment captured the nearby Fort Crown Point on May 11. Seven days later, Arnold and 50 men raided Fort Saint-Jean on the Richelieu River in southern Quebec, seizing military supplies, cannons, and the largest military vessel on Lake Champlain.

The Haldimand Affair (also called the Haldimand or Vermont Negotiations) was a series of negotiations conducted in the early 1780s (late in the American Revolutionary War) between Frederick Haldimand, the British governor of the Province of Quebec, his agents, and several people representing the independent Vermont Republic.

Vermonters had been battling Indian raids, sponsored by the British, and engaged in a long-running dispute with New York State over jurisdiction of the territory. At issue was Vermont officially rejoining the British Empire. Just as Haldimand offered generous terms for reunion in 1781, the British army surrendered after the Battle of Yorktown. Vermont, surrounded on three sides by American territory, rejected the British overtures and successfully negotiated terms to enter the United States as the 14th state in March 1791. The secret nature of the negotiations, which excluded significant portions of Vermont's political power structure, has led to accusations of treason against some of the negotiators, notably Ethan Allen.

North Hero is a town in and the shire town (county seat) of Grand Isle County, Vermont, United States. The population was 939 at the 2020 census.

The town was named in honor of the American Revolutionary War hero Ethan Allen.