 His son, Elector Frederick Augustus II (1733–63), was received into the Catholic Church, while still heir-apparent, on 28 November 1712, in Bologna, Italy.With this conversion, which on account of the excitable sentiment of the Lutheran population, had to be kept secret for five years, the ruling family of Saxony once more became Catholic.He too was controversially "elected King of Poland and Grand duke of Lithuania", that is monarch of the Commonwealth of Poland-Lithuania against the French candidate, Louis François, Prince of Conti, who, on learning the result, attempted to claim the throne arriving by sea at the port of Gdańsk.