 When Moreno left for Europe on a diplomatic mission in 1811, his wife and son stayed in Buenos Aires. María wrote many letters to Moreno, with descriptions of ongoing events in the city. Most of them were written when Moreno was already dead; she did not learn of his fate until the following August, when a letter arrived from Manuel Moreno. She requested a widow's pension from the First Triumvirate, which was in power by then; its value was thirty pesos.
