The first Greek letter organization was Phi Beta Kappa, founded Dec. 5, 1776 at the College of William and Mary in Williamsburg, Virginia. 63 years later, Beta Theta Pi was founded at Miami University in Ohio. In protest against the president of the university, members of Beta Theta Pi and other students blocked the entrances of the main educational and administrative building in what became known as the Great Snow Rebellion.
A year later, after the president expelled most of the students involved in the uprising, Phi Delta Theta was formed. Six men staying in a dormitory the day after Christmas formed the Greek-letter society. Robert Morrison, a senior, proposed to fellow classmate John McMillan Wilson they bond together to form a secret society. They invited juniors Robert Thompson Drake and John Wolfe Lindley; sophomores Ardivan Walker Rodgers and Andrew Watts Rogers into the fold. The first meeting was held in Wilson's room at Old North Hall, now called Elliot Hall.
During the early meetings, the founders wrote The Bond of Phi Delta Theta, which is the fundamental law of the Fraternity. It has remained unchanged ever since. The Founders also designed the badge, consisting of a shield, eye and scroll with the Greek letters on it. Beta Theta Pi, Phi Delta Theta and Sigma Chi were the first three fraternities founded at Miami University, so they are known as the Miami Triad. The first branch of Phi Delta Theta was founded at Indiana University in 1849. The Indiana Chapter has the longest continuous existence of any in the Fraternity.
The War Between the States was difficult for all fraternities. Battles put fraternity brother against fraternity brother, although fraternal bonds may have led to the release of many prisoners or better treatment for others.
During the two decades from 1870 to 1890, the growth of the Fraternity was very rapid, due principally to the efforts of Walter B. Palmer, Emory-Vanderbilt 1877, and George Banta, Franklin-Indiana 1876. The two were given the title of Second Founders for their work.