The former viceroy Santiago de Liniers of the Viceroyalty of the Río de la Plata is executed after the defeat of his counter-revolution.

Santiago Antonio María de Liniers y Bremond, 1st Count of Buenos Aires, KOM, OM was a Spanish military officer and a viceroy of the Viceroyalty of the Río de la Plata. Although born Jacques de Liniers in France, he is more widely known by the Spanish form of his name.

The Viceroyalty of the Río de la Plata or Viceroyalty of Buenos Aires meaning "River of the Silver", also called the "Viceroyalty of River Plate" in some scholarly writings, in southern South America, was the last to be organized and also the shortest-lived of one of the viceroyalties of the Spanish Empire in the Americas. The name "Provincias del Río de la Plata" was formally adopted in 1810 during the Cortes of Cádiz to designate the Viceroyalty of the Río de la Plata.

The Liniers counter-revolution took place in the Spanish Viceroyalty of the Río de la Plata after the May Revolution in 1810. The former viceroy, Santiago de Liniers, led an ill-fated counter-revolutionary attempt from the city of Córdoba, and it was quickly frustrated by the patriotic forces of the newly formed Army of the North. Francisco Ortiz de Ocampo, the leader of the Army of the North, captured the leaders and dispatched them to Buenos Aires as prisoners, but, on the orders of the Primera Junta, they were intercepted and executed before arrival.