George Plekhanov was once a member of this group, which more famously included the brother of Lenin.  
Vera Figner, the last member of this group's Executive Committee, was convicted as part of the Trial of the Fourteen that greatly allayed its influence.  They originally splintered from the group "Land and Liberty" and demanded universal suffrage and a Constituent Assembly through their "Worker's Gazette."  Their members included the designer of an early rocket, Nikolai Kibalchich, and a Lithuanian Pole named Ignacy Hryniewiecki (rih-new-ick-ee), who actually performed their most notable act.  Their impatience led to rise of a more radical splinter group, the Pervomartovtsi (per-voh-mar-toft-cee), whose terrorist campaign culminated in an action on March 1, 1881 for which the government hung four people.  George Plekhanov was once a member of this group, which more famously included the brother of Lenin.  FTP, name this revolutionary Russian organization that assassinated Tsar Alexander II.
Vera Figner, the last member of this group's Executive Committee, was convicted as part of the Trial of the Fourteen that greatly allayed its influence.  
People's Will or Narodnaya Volya