Estanislao López, from 1821 the undisputed leader…

Estanislao López, from 1821 the undisputed leader of Argentina' littoral provinces, had on April 7, 1822, signed the Cuadrilateral Treaty with Entre Ríos, Corrientes and Buenos Aires, calling for national unity and convening on the call to a Constitutional Assembly in Santa Fe.

López protects Rosas when he has to flee after the defeat of Manuel Dorrego's army by Lavalle in Navarro.