Nanny of the Maroons, also known as Queen Nanny and Granny Nanny, was a well-known leader of the Jamaican Maroons in the eighteenth century. The government of Jamaica declared Queen Nanny a National Heroine in 1975.

Jamaica (1996) 500 Dollar (front) - Nanny of the Maroons

Nanny is famous for her heroic struggle against the British colonial empire and its institution of slavery in Jamaica. She inspired other slaves and rebellions and freedom fighters, and finally British Government abolished slavery.

A Maroon (from the word marronage or American/Spanish cimarrón: "fugitive, runaway", lit. "living on mountaintops"; from Spanish cima: "top, summit") was a runaway slave in the West Indies, Central America, South America, or North America. Maroon populations are found in Jamaica, Amazon River Basin to the American states of Florida and North Carolina

Source: Central Bank Jamaica.
Also see Wikipedia article "Nanny of the Maroons"