E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Confession.
John of Nepomuc, canon of Prague, suffered death rather than violate the seal of confession. The Emperor Wenceslas ordered him to be thrown off a bridge into the Moldau, because he refused to reveal the confession of the empress. He was canonised as St. John Nepomucen.