 In 1801 however, the strong opposition towards the existence of the Society from Charles IV of Spain led Pope Pius VII to qualify his acceptance of the Society by limiting it to the Russian Empire.He expressed this on 7 March 1801, in the Papal brief "Catholicae fidei", through which Franciszek Kareu was made 'Superior General for Russia'.After 1801, contact with ex-Jesuits increased, thanks to the efforts of his Assistant Gabriel Gruber, his future successor as 'Superior General for Russia'.