Biography: Anna Eleanor Roosevelt Seagraves (née Dall; born March 25, 1927) is an American librarian, educator, historian, and editor. She is the eldest grandchild of Franklin D. Roosevelt and Eleanor Roosevelt. Her parents are Anna Roosevelt Dall and her first husband Curtis Bean Dall. She is usually known as "Sistie", "Ellie" or "Eleanor". She is currently the oldest living grandchild of a US President.