He was
the Last Lincoln

Here is an account of the painful life of Robert Todd Lincoln (1843 – 1926), the only son of President Abraham Lincoln:

"He witnessed the death of his father, the untimely deaths of his three brothers, the mental deterioration of his mother and the passing of his own 17-year-old son, who was the last hope for carrying on the Lincoln name."

Click here to read about General Grant's son.