Question

Who were the Jacobins

Answer 1

A Jacobin was a member of the Jacobin Club, a revolutionary political movement that was the most famous political club during the French Revolution. 
Their leader was Robespierre

hope it helps

Answer 2

During the French Revolution, people created many political clubs to discuss their views about the revolution. The most successful and famous among them was the Jacobin Club. The people belonging to it were the 'Jacobins'.