Mariano Luis de Urquijo

Events

1

Episodes

2

Years

1800

Every event in Historedia whose sources name Mariano Luis de Urquijo, with the role they cite and all of that event’s episodes. This is not a biography, and mentions are grouped by name, so two people with the same name can share this page.

Events and episodes

1. Third Treaty of San Ildefonso

   1800

   Role: Spanish former Chief Minister and negotiator for Spain

   1. 11800 · San Ildefonso, SpainShips of the Line and Conditional Italian Territories

      Spain was to supply six named ships of the line, while the Italian compensation remained geographically vague and conditional on French confirmation.

   2. 21 October 1800 · San Ildefonso, SpainSecret Signing of the Third Treaty of San Ildefonso

      On 1 October 1800, Spain and the French Republic secretly agreed that Louisiana would return to France in exchange for Italian territories.

Sources

1. Third Treaty of San Ildefonso Wikipedia, revision of 2026-08-11