
On June 12, 1349, in the municipality of Valencia-Spain, King Pedro IV of Aragon, called “The Ceremonious”, married for the third time; On this occasion the bride was Princess Eleanor of Sicily, his third cousin. This familiarity was due to the fact that Peter the Ceremonious's paternal grandfather, the King of Aragon James II known as "the Just", was a brother in full from the King of Sicily Frederick III, who was the bride's paternal grandfather. The pair of fraternal monarchs were the daughters of the couple Peter III of Aragon, the great and Constance II of Sicily, who had inherited the throne from their father, Manfred, of the Hohenstaufen House, bringing it to the House of Aragon; the thrones, once separated by inheritance from the brother kings, were reunited in a certain way, following the marriage of Peter, the ceremonious and Eleanor, who descended from the most ancient Germanic: in addition to the Hohenstaufen on the side of her progenitor, Eleanor's mother Elizabeth Von Kaernten was a paternal granddaughter of Elizabeth Von Wittelbacht and a great-granddaughter on her maternal side of Hedwig of Anhalt, who thus had among her ancestors Duke Albert the Bear, Margrave of Brandenburg, patriarch of several princely Houses. The marriage between Pedro IV and Eleanor of Sicily resulted in five children
: Juan I el Cazador, king of Aragón; Martín I el Humano, king of Aragón; Eleanor of Aragon; Alifonso, Infant d'Aragón and Marie de Aragón In addition to these descendants and subsequent generations - great-grandchildren - all descendants resulting from this conjugal bond, as well as the predecessors who genetically contributed to its achievement, will be highlighted here.