Oh boy, I went on a wild goose chase through Wikipedia and found a really, [i]really[/i] tenuous coincidental(?) connection.

The city of Gdansk in Poland was formerly named Danzig, as in this roleplay.
An early record states Danzig as a city in which the practice of adopting the Grain Mother (a good-luck figure fashioned at harvest from the last sheaf of wheat) occurred.
One theorised example of the Christianisation of the Grain Mother tradition is an early depiction of a particular female saint associated with grain and holding stalks of grain.
That saint is Saint Walpurga.
Whose saint's day is celebrated in Europe as Walpurgis Night.

fkn' grain-based illuminati bullshit right there, guess who's not eating corn flakes tomorrow morning (hint it's me)