At that time the name of the school was the Seminary of Learning of the State of Louisiana and then several months later the name was changed to the Louisiana State Seminary of Learning and Military Academy. William Tecumseh Sherman was the first superintendent. In 1870 the name was changed to LSU.
Source: "Under Stately Oaks: A Pictorial History of LSU" by Thomas F. Ruffin, Jo Jackson, Mary J. Hebert