Abraham and Mary Lincoln had four children, all boys. They were: Robert Todd Lincoln, only one to live to adulthood, Edward "Eddie" Baker Lincoln, William "Willie" Lincoln and Thomas "Tad" Lincoln. Robert Lincoln was born on Aug. 1, 1843 in Springfield, Illinois. He was a lawyer, business man and served in government. He was Secretary of War from 1881 to 1885 under James Garfield and then Chester Arthur. Under Benjamin Harrison he was Minister to the Court of St. James ( 1889-1893). He was General Counsel for Pullman Palace Car Co. In 1911 he became Chairman of the Board of that Company. He was very interested in astronomy and had an observatory at his home in Manchester, Vermont. He and his wife, Mary Eunice Harlan had three children ( 2 daughters and a son). They were Mary "Mamie" Lincoln, Abraham Lincoln II called Jack who died while Robert Lincoln was Minister to St. James Court, and Jessie Harlan Lincoln. Robert certainly knew tragedy with death of his Father, death of three brothers, death of his own son Jack and the depression and commitment of his Mother.