287 BC: Lex Hortensia (binding plebiscita)
Publius Cornelius Scipio Aemilianus
Appius Claudius Pulcher
Caecilius Metellus Macedonicus
Plutarch, Appian, Livy, Sallust
Tiberius Sempronius Gracchus

father: Ti. Sempronius Gracchus, twice-consul, once censor
mother: Cornelia daughter of Publius Cornelius Scipio Africanus
brother-in-law (married to sister Sempronia): Publius Cornelius Scipio Aemilianus
father-in-law: Appius Claudius Pulcher
brother: Gaius Sempronius Gracchus

Lex Sempronia
princeps senatus
Publius Licinius Crassus, father-in-law of Gaius Sempronius Gracchus
Publius Mucius Scaevola
(Concilium Plebis = Plebeian Assembly)
Marcus Octavius & Publius Cornelius Scipio Nasica
triumviri agris iudicandis assignandis ("Commission of Three charged with adjudicating the assigning of [public] lands"):

Ti. Sempronius Gracchus
G. Sempronius Gracchus
App. Claudius Pulcher

Attalus, King of Pergamum, d. 133 BC
P. Mucius Scaevola, cons. 133 BC
P. Popilius Laenas, cons. 132 BC
G. Papirius Carbo, pleb. tribune 131 BC, lex Papiria
M. Fulvius Flaccus, triumvir, consul in 125 BC
Junonia (formerly Carthage) established 122 BC
M. Livius Drusus, pleb. tribune 122 BC
L. Opimius, consul 122 BC