Joanna I of Naples

Joanna I (December 1325 – 27 July 1382), elder surviving daughter of Charles, Duke of Calabria, and Marie of Valois, succeeded her grandfather Robert the Wise as queen of Naples and countess of Provence in 1343. Her first husband, Andrew of Hungary, was murdered at Aversa in 1345, bringing invasion by Louis I of Hungary.

She later married three more times. In the Western Schism she backed the Avignon antipope Clement VII, and Urban VI declared her deposed in 1380. Charles of Durazzo seized Naples and had her killed at Muro Lucano.