For 10 points, give this surname shared by the man who bought the Carnegie Steel Company, John Pierpont.
An American historian with this surname authored several works about the Mormons, such as 1953's Jebediah Smith and the Opening of the West.  A Confederate officer with this last name captured 1,700 Union troops at the Battle of Hartsville before most of his troops got captured at Buffington Island.  An African American inventor with this last name came up with a "safety hood" used by firefighters and invented the first traffic signal. After being released from a Quebec prison, a future general with this surname defeated Banastre Tartleton at the Battle of Cowpens.  A Confederate general with this surname attacked Kentucky and Indiana with his namesake "Raiders". One man with this last name lent gold to the US government following the Panic of 1893 and masterminded the merger that formed General Electric.  For 10 points, give this surname shared by the man who bought the Carnegie Steel Company, John Pierpont.
An American historian with this surname authored several works about the Mormons, such as 1953's Jebediah Smith and the Opening of the West.  
{Morgan}