Robert Todd Lincoln
August 1, 1843 – July 26, 1926
"Rob" was named for his grandfather Robert Todd. As the only Lincoln child to reach maturity, he experienced the deaths of his brothers and his parents. Robert Lincoln married Mary Harlan with whom he had three children: Mary, Abraham and Jessie. He was a Harvard Law School graduate but later turned to business and became president of the Pullman Company in Chicago. He served as Secretary of War under President Garfield and later, as United States Ambassador to Great Britain. Robert died at his home in Vermont – Hildene – at the age of 83. He is buried in Arlington Cemetery in Washington, D.C., the only Lincoln son not interred in Oak Ridge Cemetery in Springfield, Illinois.
Edward Baker Lincoln
March 10, 1846 – February 1, 1850
Edward was the second son born to Abraham and Mary Todd Lincoln. He was named for Edward Dickinson Baker, a friend and political associate of his father. The cause of his early death is unknown, although diphtheria has been suggested. No photograph is known to exist of Edward Baker Lincoln. He is buried in the Lincoln Tomb in Oak Ridge Cemetery in Springfield, Illinois. William Wallace Lincoln (December 21, 1850 – February 20, 1862) The third son, "Willie," was named for William Wallace, Mary Todd Lincoln’s brother-in-law. William was said to be the most lovable of the Lincoln children and a good student. He liked to ride his pony around the White House grounds. He died from an ailment variously diagnosed as bilious fever, typhoid, and acute malarial infection. He is buried in the Lincoln Tomb in Oak Ridge Cemetery in Springfield, Illinois.
April 4, 1853 – July 15, 1871
"Tad," the fourth and youngest Lincoln son had a speech impediment that caused him to lisp. With William, he was responsible for many jokes and pranks in the White House. After the assassination of his father, Tad and his mother lived in Europe for three years. While there he apparently contracted his fatal illness diagnosed as "pleurisy…probably tubercular in origin." He is buried in the Lincoln Tomb in Oak Ridge Cemetery in Springfield, Illinois.