The lawyer Robert Todd died at the age of 82. Here is all you want to know, and more!
Biography - A Short Wiki
American lawyer and U.S. Secretary of War from 1881 to 1885. He was the first son of President Abraham Lincoln. Strangely enough he was present or nearby during three presidential assassinations.
He married Mary Eunice Harlan with whom he had three children: Abraham II, Jessie and Mamie.