Kappa Sigma Fraternity was originally founded as a secret society of students at the University of Bologna in the year 1400. The group was founded by Manuel Chrysoloras, a Greek Scholar, who taught at the University. In that day of city-states, the group's initial purpose was mutual protection of its members against physical attack and robbery by the unscrupulous governor of the city, Baldassare Cossa. In 1400, Chrysoloras and his five disciples formed a society for mutual protection which inspired the Ritual and beliefs of modern day Kappa Sigma.
Kappa Sigma in America was founded one chilly evening in the fall of 1869, as five students attending the University of Virginia in Charlottesville gathered in William Grigsby McCormick's room at 46 East Lawn and planted the seed of Brotherhood. For many weeks the bonds of friendship had drawn these five together; now the need became clear for a formal structure to contain their feelings. Thus, not only did the Founders formalize their friendship, but they also created a fraternity steeped in the traditions of the past and dedicated to the Pursuit of Learning. The new brothers recorded their bond in a Constitution and in an Oath which set forth the ideals and principles to all Kappa Sigmas today.
Kappa Sigma at the University of Nevada, Las Vegas was founded on June 2. 1967 and was the first Greek organization on campus.