Prince Hall, a free Black man living in Boston, was initiated into Freemasonry in 1775 — not by an American lodge, all of which at the time refused to admit Black members, but by an Irish military lodge, Lodge No. 441, attached to a British army regiment stationed near the city. This was, in itself, entirely regular: military lodges routinely initiated men connected to their garrison, and there was nothing procedurally unusual about Hall's admission.
After the British left Boston at the end of the Revolutionary War, Hall and fourteen other Black Masons found themselves without a lodge of their own and still barred from joining existing American ones. Rather than abandon the fraternity, they took the entirely proper route available to them: they petitioned the Grand Lodge of England directly for a charter of their own. In 1784, that charter was granted, establishing African Lodge No. 459 in Boston — a foundation with precisely the same legitimacy as any other lodge chartered by the same governing body during the same period.
Prince Hall himself became an important civic figure well beyond Masonic circles — a documented abolitionist, petitioner for the education of Black children in Boston, and advocate against the kidnapping and re-enslavement of free Black Bostonians. His Masonic founding and his broader civil rights activism were, in his own life, part of the same continuous project.