Wilhelm von Grumbach

thumb|Wilhelm von Grumbach

thumb|Coat of arms of the von Grumbach noble family, Scheiblersches Wappenbuch, 1450–1480

Wilhelm von Grumbach (1 June 150318 April 1567) was a German adventurer, chiefly known through his connection with the so-called "Grumbach Feud" (), the last attempt of the Imperial Knights to prevail against the power of the territorial Princes of the Holy Roman Empire.

Florian Geyer

A member of the old Franconian noble family von Grumbach (a branch of the Wolfskeel Uradel family), Wilhelm was born in Rimpar near Würzburg, and having passed some time at the court of the Hohenzollern margrave Casimir of Bayreuth, fought alongside the princes during the German Peasants' War in 1524 and 1525.