Legend has it that he and his brother traveled to Lyria where they met and fell in love with twin sisters, Rigoberta and Impecca, with Ceran marrying the latter. He then settled in Lyria and, after the death of his father-in-law Egon, took power and started a new dynasty with Impecca. The couple had one child: a daughter named Viviana, who later married into the Redanian line.
It is thanks to Ceran that the emblem of Lyria and Rivia includes the Cintrian lions.
Considering that Calanthe and Meve are distant cousins, it's probable that Ceran and/or Impecca had at least one more child to continue the Lyria-Rivia line.