KQ2 (AGDI) suggests that the dragon was unleashed by The Father of the Black Cloak Society, as part of his curse on the kingdom. The Father's goal was twofold; obtaining the Crown of Daventry, and seeing Graham broken. However, the crown of Daventry appeared only to be the means to a greater end, but the true aim was not made explicitly clear. The dragon also could also be a result of the curse, but not something specifically summoned by Morgeilen; just one of many random "dire jeopardies" that were to befall the kingdom and bring misery to his family, before the coming of the second curse (Graham's heart attack).