Frederick IV of Sicily
Son of Queen Elisabeth, a small child in 1348, whom she called from Messina to Catania during the plague. He later reigned as king of Sicily.
The Plague Comes to Messina and Catania
Anonymous of Catania, Sicilian History, printed in Rosario Gregorio’s Bibliotheca scriptorum (1791) · after April 1348 (events of October 1347 to April 1348)
27.11
Inclita Regina Helisabeth Regina Sicilie, existens in civitate Catanie, don Fridericum filium suum, qui in civitate Messane tunc temporis aderat, ad se festinanter jussit venire; qui cum galeis Venetorum Cataniam festinanter applicuit.
Queen Elisabeth of Sicily was in the city of Catania. She sent for her son Don Frederick, who was in Messina at the time, to come to her at once. He hurried to Catania on Venetian galleys.