Queen of Naples and titular Queen of Jerusalem. Daughter of Charles d'Anjou and Marie de Valois. She succeeded her grandfather Robert I. on the thrones of Naples and Jerusalem in 1343. She was crowned in October 1344 in Naples. She inherited the titles of Duchess of Calabria, Princess of Capua and Countess of Provence, Forcalquier and Piemont from her father. In 1345 her first husband Andrea of Hungary was killed and it was rumored that she had ordered the murder. In December 1345 she gave birth to Charles Martell, Duke of Calabria. In 1347 she fled with her new husband, Louis d'Anjou-Tarente, from the hungarian vengeance to the Provence. The pope, who resided in Avignon brought the city from her and absolved her from her sins. In 1352 she returned to Naples where she was crowned with her husband. She had to fight against her relatives from the younger line of the Durazzos and Anjou-Tarente. Louis died in 1362. Between 1363 until his death she was married to Jaime III. d'Aragon, titular King of Mallorca. After some tension in the relationship he went to Mallorca where he died. In 1376 she married her fourth husband Otto of Brunswick- Grubenhagen. In April and September 1378 two new popes where elected. She supported the anti-pope Clemens VII. which brought her the anger of pope Urban IV. Urban accused her being a heretic and deposed her. He gave the crown to Charles of Durazzo. As a result Joanna adopted Louis d'Anjou, brother of the french king Charles V. and named him her sole heir. In 1382 she was imprisoned by Charles Durazzo and strangulated in her cell at the Castello San Fele. Her body was brought to Naples where for several days it was put on display to the public as proof of her death. As Urban VI had excommunicated Joanna, the Queen could not be consecrated in church property and was therefore tossed into a deep well in the grounds of Chiesa Santa Chiara .