Benjamin Banneker was born 9 November 1731in Baltimore County, Maryland, the first child of free African American parents Mary Banneker and Robert, a former slave whose freedom she had purchased and who took her surname upon marriage. Growing up on their tobacco farm, Benjamin received little formal schooling, learning to read and write from his grandmother and attending for several seasons an interracial school where he first developed his lifelong interest in mathematics. Following his parents’ deaths and three sisters’ departures from home, Banneker remained on the farm, working the crops and cultivating his intellect in relative seclusion.
In 1771, he befriended George Ellicott a Quaker neighbor whose family had developed a large complex of mills on the adjoining property With astronomical texts and instruments borrowed from Ellicott he trained himself to calculate ephemerides tables establishing the positioning of the sun moon and stars for each day ...
