The Jacobin Club, formally known as the Society of the Friends of the Constitution, had four leaders in its six-year existence in Revolutionary France: de Mirabeau, Antonelle, Robespierre and de Barras. Arguably, Maximilien de Robespierre is the most well-known and most notorious of the presidents of this organization.
The Jacobin Club was a French political party active prior to, and throughout, the French Revolution at the end of the 18th century. The party was responsible for the period known as the Reign of Terror, in which aristocrats of the disenfranchised noble houses of France were hunted down and executed at the prompting of the Jacobins. Robespierre's execution in 1794 by opponents of the Jacobins caused the influence of the group to decline.