The NPS has a nice short video discussing the love of Ulysses and Julia Grant. They do a great job in a very short amount of time.
The video’s description says, “Most people know Ulysses S. Grant as a victorious Civil War general and the 18th President of the United States, but many don’t know that he was deeply in love with his wife, Julia. This is their love story, now told at the Ulysses S. Grant National Historic Site in St. Louis, Missouri. http://www.jnpa.com/ulsg.shtml”