The Schenk von Stauffenberg family is a Roman Catholic Uradel German noble family from Swabia, Germany. The family's best-known recent member was Colonel Claus Schenk Graf von Stauffenberg – the key figure in 20 July plot in 1944 to assassinate Adolf Hitler. History. The recorded history of the Schenk von Stauffenberg family begins in Swabia in the 13th century, when the family, who belonged to the Reichsrittern (Imperial Knights), originated from the settlement Cell, where they owned extensive estates surrounding the village and the Zollerberg.
https://en.wikipedia.org/wiki/Stauffenberg