Beelzebub’s Tales About His Second Descent on to the Planet Earth—p178 notes

Party-Pythoness, Pythoness

Pythoness: Refers to Pythia, the Oracle of Delphi, known in English as the Pythoness.  

Pythia is derived from Pytho, which was the original name of Delphi. The oracle is well-documented and appears in many accounts, including that of Homer.