Baltasar Hidalgo de Cisneros
The news of the fall of the Junta of Seville reached Buenos Aires in May 1810. With both the king of Spain and the Junta removed of power, many people thought that Cisneros had no legitimacy to govern, starting the May Revolution. Cisneros tried to calm down the population, to no avail. He called the commanders of the local armies and requested their support, but they denied it. Cisneros was ultimately forced to allow an open cabildo, which would discuss what to do. Although those meetings were usually composed of the wealthiest population, the army and a group of rioters plotted to prevent the entry of many wealthy people and allow common people instead.
Domingo French
During the week preceding the May Revolution, he supported the movement with enthusiasm. On May 21, the "Plaza de la Victoria" ("Victory Square", known today as Plaza de Mayo) was occupied by some 600 armed men, headed by Domingo French and Antonio Luis Beruti, under a group known as the ""chisperos"", who shouted requests for the forming of an open Cabildo and the deposement of Viceroy Cisneros. Alarmed by the commotion on the square, the viceroy agreed to a meeting for the following day and called Cornelio Saavedra, commander of the Patricios Regiment, to calm the citizenry at the square. Saavedra communicated to the ""chisperos"" that there would be an open cabildo on May 22 and asked them to stand down.