http://www.suite101.com/article.cfm/presidents_and_first_ladies/46686

John Scott Harrison, 1804-1878. John Scott Harrison was the only man to be both the father and son of a President. Also born in Vincennes, Indiana, he married Lucretia K. Johnson in 1824. After she died, he married Elizabeth Ramsey in 1831. He had 13 children, including Benjamin Harrison, the 23rd President of the United States (1889-1893). A successful farmer, he served two terms in Congress, where he was known for his anti-slavery views. He disliked politics, and returned home to his farm. Shortly after his death at 73, his body was stolen by grave robbers and sold to the Ohio Medical College in Cincinnati. Buying bodies from questionable sources was a common practice for medical schools that needed cadavers for their students to practice upon. The body was discovered by his son, John Harrison, (some stories say that another of his sons, Benjamin Harrison, was with him) who came to the medical school on business and was horrified when he accidentally discovered the body of his father hanging by his neck at the end of a rope.