Born into slavery, Frederick Douglass became one of the leading abolitionists in America. Bettmann/Getty ImagesThough Frederick Douglass remains the most well-known abolitionist to visit Ireland in the decades prior to the American Civil War, he was not the only one. As many as 30 Black abolitionists and activists also traveled to Ireland between 1790 and 1860. Olaudah Equiano was one of them. Born in Africa, Equiano was kidnapped when he was …