He was captured after the peasants' loss at Klettgau in July 1525, imprisoned at the Hohentwiel fortress, and executed in August of that year.

The location of his birth is usually given as the village of Bulgenbach, which today is in the vicinity of Grafenhausen, near the Black Forest lake of Schluchsee.

Then he went to Donaueschingen, and united with the Brigach Valley Haufen, and on 14 December, engaged in a small battle with 2,000 nobles.

[2] On 23 May, Müller and his Haufen took possession of Freiburg im Breisgau, where the city fathers in the emergency entered into the so-called "Christian Union" with the peasants.

He was captured and imprisoned on the Hohentwiel, and later moved to the Habsburg fortress in Laufenburg, where he was tortured and finally, probably on 12 August, decapitated.