Ignatius Sancho: Music of an Eighteenth-Century Black Englishman The Black British writer and musician Ignatius Sancho (ca. 1729-1780) may have been born into slavery. By 1749, he had become part of the household of the Duke of Montagu, where he worked as a valet, later becoming a shopkeeper in the neighborhood of Westminster. Sancho is known today as a writer through his posthumously published Letters of the Late Ignatius Sancho, an African (1782).