Eric of the Windy Hat
According to Hector of Boêce, Eric (or Henry), an early king
of Sweden, was surnamed ‘‘the Windy Hat’’ because it was believed
that he could change the wind merely by turning his hat
on his head to show his demon which way he wished the wind
to blow. The demon obeyed the signal so promptly that the
king’s hat might have served the people for a weathercock. This
story gave rise to the expression ‘‘a capful of wind.’