Information
Name: First Treaty of San Ildefonso
Type: Event
Start: 1777
End: 1777
Parents: Spanish-Portuguese War (1776-77)
First Treaty of San Ildefonso: All Data
This page is about the data available for this event, the chronology of the event is available here.
Was a treaty between Spain and Portugal that settled long-running territorial disputes between the two kingdoms' possessions in South America, primarily in the Río de la Plata region.