Three-headed Dragon

A Three-headed Dragon has been been ravaging kingdoms across the continent of Serenia during the reign of Graham. News brought to to the kingdom of Daventry brought fear to land.

Soon it brought its destruction to Daventry. People of other lands put up walls around Daventry to contain the dragpm in Daventry, while it saved many lands it amplified the destruction there. The dragon then abducted Graham's young daughter, Rosella, taking her to the land of the clouds above Daventry.

Gwydion, right after escaping his dangers and adventures, reaches Daventry and rescues the maiden, only to discover that she is his sister.

Alexander wrote that dragon was most likely under some ensorcellement. If it had been marauding on its own, it would have cindered Rosella quickly and moved on to new victims. It is still a mystery to all as to who set that particular dragon of fire to ravage Daventry, as it could neither have been Manannan or Mordack (though at least Manannan took joy from watching the Dragon's destruction from afar).

KQ2 (AGDI) suggests that the dragon was maybe unleashed by the Black Cloak Society, their ultimate aim being the crown of Daventry, but this is not made explicitly clear. The dragon could be as well only an unrelated event to them, which they saw as an opportunity in order to ask the crown from Graham.