Treaty of Peace and territorial limits between Spain and Portugal. | |
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Palacio La Granja, where the Treaty was signed | |
Context | Spain and Portugal settle territorial disputes in the Río de la Plata region |
Signed | 1 October 1777 |
Location | Real Sitio de San Ildefonso |
Negotiators |
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Parties |
The First Treaty of San Ildefonso was signed on 1 October 1777 between Spain and Portugal. It settled long-running territorial disputes between the two kingdoms' possessions in South America, primarily in the Río de la Plata region.