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If you mean the Concilium Plebis, no, the patricians had nothing to do with it. It was a counsul of the Plebs. It could only be conviended by a Tribune of the plebs or an aedile of the plebs.
The concilium plebis was the assembly of the plebs in ancient Rome. Its voting was divided on the basis of tribes, though it could not make decisions that were binding on the entire populus (patricians and plebs) and its resolutions were called plebiscites.
It was the Plebeian Council (Concilium Plebis)
471 B.C. Source: My World History textbook :)
the assembly of the soldiers (comitia centuriata), the assembly of the ribes (comitia tributa) and the plebeian council (concilium plebis)
If you mean the military tribunes, they were created right at the beginning of the creation of the Roman army by Romulus, the founder of the city and its first king. If you mean the plebeians tribunes, they were created during the first rebellion of the poor plebeians: the First Plebeian Secession (494 BC). The plebeian movement created its leaders (the plebeians tribunes) and their assistants (the plebeian aediles) and the assembly of the movement, the plebeian council (concilium plebis).
Concilium - journal - was created in 1965.
Sacrosanctum Concilium was created in 1963.
It depended on the kind of tribune. During the Roman Republic the Tribunes of the Soldiers were elected by the Assembly of the tribes. Each year 24 young men in their late twenties with senatorial ambitions were elected to serve as Tribunes of the Soldiers (tribuni militum). They were distributed six to each of the consuls' four legions as the legions' commanding officers. The Tribunes of the Plebs (or Plebeian Tribunes), who were the leaders of the plebeians and represented the interests of the plebeians were elected by the Plebeian Council (Concilium Plebis).
In the Kingdom of England, the Magnum Concilium, or Great Council, was an assembly convened at certain times of the year when church leaders and wealthy landowners were invited to discuss the affairs of the country with the king. It was established in the reign of the Normans.
They were the tribuni plebis, plebeian tribunes or tribunes of the plebs.