Francus or Francio is a mythological figure of French medieval historians which referred to a legendary eponymous king of the Franks, a descendant of the Trojans, founder of the Merovingian dynasty and forefather of Charlemagne.
[5] The Grandes Chroniques de France (13th - 15th centuries), a vast compilation of historic material, make reference of the Trojan origins of the French dynasty.
He changes his name to Francus and becomes king of Celtic Gaul (while, at the same time, Bavo, cousin of Priam, comes to the city of Trier) and founds the dynasty leading to Pepin and Charlemagne.
Gilles Corrozet's La Fleur des antiquitez... de Paris (1532) describes Francis I as the 64th descendant of Hector of Troy.
The young hero arrives in Crete and falls in love with the princess Hyanthe with whom he is destined to found the royal dynasty of France.