Attendants came at last, and, forcing the door, told Joanna of the murder; on which she declared that she had been so soundly asleep that she had heard nothing, though she was never able to explain satisfactorily how in that case the door of her bedroom had become locked behind the young king. Naturally the greater part of Europe believed that she was guilty of connivance in the crime, and King Louis of Hungary brought an army to Italy to avenge his brother’s death. He succeeded in driving Joanna from Naples, which he claimed as his rightful inheritance, but he was not sufficiently supported to make a permanent conquest, and in the end he was forced to hurry away to Hungary, where his throne was threatened, leaving the question of his sister-in-law’s guilt to be decided by the Pope. The Pope at this time looked to the Angevin rulers of Naples as his chief supporters, and at once proclaimed Joanna innocent. It is worthy of note that three princes were found brave enough to become her husband in turn; but, though four times married, Joanna had but one son, who died as a boy. At first she was quite willing to accept as her heir a cousin, Charles of Durazzo, who was married to her niece, but soon she had quarrelled violently with him and offered the throne instead to a member of the French royal house, Louis, Duke of Anjou. This is a very bewildering moment for students of history, because it introduces into Italian politics a second Angevin dynasty only distantly connected with the first, yet both laying claim to Naples and waging war against one another as if each belonged to a different race. Joanna in the end was punished for her capriciousness, for in the course of the civil wars she had introduced she fell into the hands of Charles of Durazzo, who, indignant at his repudiation, shut her up in a castle, where she died. One report says that she was smothered with a feather-bed; another that she was strangled with a silken cord--perhaps in memory of Prince Andrew’s murder. After this act of retribution, Charles of Durazzo maintained his power in Naples for four years, though he was forced to surrender the County of Provence to his Angevin rival. Not content with his Italian kingdom, he set off with an army to Hungary as soon as he heard of the death of Louis the Great, hoping to enforce his claims on that warrior’s lands. Instead he was assassinated, and succeeded in Naples by his son Ladislas, a youth of fifteen.