Roosevelt's grandchildren include John Ellis Roosevelt (1853–1939), president of the Elkhorn Valley Coal Land Company, William Emlen Roosevelt (1857–1930), a banker and president of Roosevelt & Son, Theodore Roosevelt (1858–1919), the President of the United States from September 14, 1901 until March 4, 1909, and Granville Roland Fortescue (1875–1952), an author and soldier.
Roosevelt's offspring comprise John Ellis Roosevelt (1853–1939), president of the Elkhorn Valley Coal Land Company, William Emlen Roosevelt (1857–1930), a banker and president of Roosevelt & Son, Theodore Roosevelt (1858–1919), the President of the United States from September 14, 1901 until March 4, 1909, and Granville Roland Fortescue (1875–1952), an author and soldier.