Career
He returned to Spain upon the arrival of Luis Onís, who replaced him, and who was nominated by the "Junta Patriótica" opposed to the invasion of Spain by Napoleon Bonaparte. In November 1799, De Foronda wrote a letter to the then Spanish Secretary of State Mariano Luis de Urquijo, another Basque, concerning the financial crushing of the "Banco de San Carlos", a precursor to the present-day Bank of Spain where he had invested the proceeds of sale of his land and farms. Its reception probably resulted in his diplomatic nomination to the Spanish Consulate in Philadelphia.
His "Observaciones sobre algunos puntos de la Obra de Don Quijote", Philadelphia (1807), motivated his inclusion on the short-list of people phobic against world famous Seventeenth Century Spanish writer Miguel de Cervantes (September 29, 1547 – April 23, 1616).