 Hipólito Vieytes was about to make a diplomatic mission to Britain , but Moreno requested that he should be given the appointment instead . Saavedra accepted immediately . He traveled to Britain with his brother Manuel Moreno and his secretary Tomás Guido , on the British schooner Fame . His health declined and there was no doctor on board , but the captain refused requests to land at some earlier port such as in Río de Janeiro ( Brazil ) or Cape Town ( South Africa ) . The captain gave him an emetic in common use at that time , prepared with four grams of antimony potassium tartrate . Moreno had great convulsions as a consequence , and considered that in his state he could not have resisted more than the quarter of a gram . He died shortly afterwards . His body was wrapped in a Union Jack and thrown into the sea , after a volley of musketry . 
