Hal-Huntl Mukburl (1780-1826) was a Dutch Barvuist, who set up the 'Rotterdam Barvuist Family', an early commune, consisting of 50 fellow Barvuists. Mukburl preached free love, as well as free hate, and encouraged his followers (most of them escaped convicts and ex murderers) to commit crimes such as pick-pocketing, and arson.

Hal-Huntl was remarkable for being born a cyclops, as well as being blind.