Magonia

Magonia is the name of the cloud realm whence felonious aerial sailors were said to have come, according to commonly held beliefs denounced in the polemical treatise by Carolingian bishop Agobard of Lyon in 815, where he argues against weather magic. The treatise is titled De Grandine et Tonitruis (On Hail and Thunder).

==Description== In his treatise Agobard complains that in his region it is widely believed that there is a land called Magonia whose inhabitants travel the clouds in ships and work with Frankish tempestarii ("tempest-raisers" or weather-magi) to steal grain from the fields during (magically raised) storms. He denounces such beliefs as ignorant and refutes them with many quotations from Scripture, to prove that God alone causes hail and thunder.