Charles Ignatius Sancho was a British abolitionist, writer and composer. Born on a slave ship in the Atlantic, Sancho was sold into slavery in the Spanish colony of New Granada. After his parents died, Sancho's owner took the two-year-old orphan to England and gifted him to three Greenwich sisters, where he remained their slave for eighteen years. Unable to bear being a servant to them, Sancho ran away to the Montagu House, whose owner had taught him how to read and encouraged Sancho's budding interest in literature. After spending some time as a servant in the household, Sancho left and started his own business as a shopkeeper, while also starting to write and publish various essays, plays and books.
Sancho quickly became involved in the nascent British abolitionist movement, which sought to outlaw both the slave trade and the institution of slavery itself, and he quickly became one of the most devoted supporters of the movement. Sancho's status as a male property-owner meant he was legally qualified to vote in a general-election, a right he exercised in 1774 and 1780, becoming the first known Black Briton to have voted in Britain.