For four years--that is to say, from 1721 to 1725--the _liaison_ between Adrienne and Maurice de Saxe continued without any particular incident; Maurice pursuing his military studies, making journeys to Dresden and Warsaw to visit his father, on whose behalf he seems to have acted as a sort of unofficial ambassador in France, and indulging in a good many _passades_; Adrienne, though she must have very speedily awakened to the fact that what was the all-absorbing interest in her life was but a mere episode in her hero's, loving him none the less devotedly, and deriving consolation from the thought that, if others disputed with her the possession of his heart, she alone possessed his confidence. Then came a long separation. The Duchy of Courland, which for nearly two centuries had been under the protection of Poland, fell vacant through the death of Duke Ferdinand, who ruled in the name of his niece, Anne Ivanovna, afterwards Czarina of Russia, a childless widow. Several candidates for the ducal crown presented themselves, and the unprepossessing duchess found herself beset with suitors, eager to strengthen their claims by securing her hand. Augustus II., however, decided to put forward his son, and Anne, having been approached on the matter, expressed herself favourably disposed towards a marriage with the young man. The prospect of conquering a kingdom for himself with his sword, as, even should the Diet elect him and Anne accept him as her husband, his rivals were not likely to abandon their claims without a struggle, appealed strongly to the adventurous Maurice, and he set out for Courland. Everything augured well for his success, when, one day in May 1726, he received, to his astonishment and disgust, orders from his father to renounce his candidature. Diplomatic complications obliged Augustus to discourage his son's ambition.