Knights of the Golden Circle
The Knights of the Golden Circle (KGC) was a secret society founded in 1854 by American George W. L. Bickley, the objective of which was to create a new country, known as the Golden Circle, where slavery would be legal. The country would have been centered in Havana and would have consisted of the Southern United States and a "golden circle" of territories in Mexico, Central America, northern parts of South America, and Cuba, Haiti, Dominican Republic, and most other islands in the Caribbean, about 2,400 miles (3,900 km) in diameter.
Seal of the president of the Knights of the Golden Circle, National Archives
An alleged secret history of the Knights of the Golden Circle published in 1863
A secret society is an organization about which the activities, events, inner functioning, or membership are concealed. The society may or may not attempt to conceal its existence. The term usually excludes covert groups, such as intelligence agencies or guerrilla warfare insurgencies, that hide their activities and memberships but maintain a public presence.
"Secret Society Buildings at Yale College" by Alice Donlevy c. 1880. Pictured are: Psi Upsilon (Beta chapter), 120 High Street. Left center: Skull and Bones (Russell Trust Association), 64 High Street. Right center: Delta Kappa Epsilon (Phi chapter), east side of York Street, south of Elm Street. Bottom: Scroll and Key (Kingsley Trust SSS Nonse Association), 490 College Street.
The Brethren of Sincerity) were a secret society of Muslim philosophers in Basra, Iraq, in the 9th or 10th century CE.
A Hongmen seal, 19th century