found: Work cat.: Archiv der Freiherren von Mentzingen, Schlossarchiv Menzingen, 2007:p. 9 (Grafen von Helmstatt; together with the barons Göler of Ravensburg and the barons of Mentzingen, the counts of Helmstatt form the core of the lower noble families of the Kraichgau)
found: De.wikipedia.org, Aug. 2, 2007:under "Herren von Helmstatt" (Herren von Helmstatt; noble family that rose from the ministerial ranks to the lower nobility, and has exercised great influence in the Kraichgau and Odenwald since the 14th cent.; name derived from the ancestral seat of Helmstadt [sic], today in the Rhein-Neckar Kreis)
found: Genealogisches Handbuch des Adels:Adelslexikon, Bd. 5, p. 107 (Helmstatt; old noble Swabian family, Catholic, belonging to the Swabian imperial knighthood, canton of Kraichgau; derived with the Gölers of Ravensburg and the Mentzingens from the common ancestor Raven de Wimpina zu Rappenau, 1190; purchase of the county of Mörchingen in Lorraine led to confirmation of title as counts under kings Louis XV and XVI; immatriculation of title as counts in Kingdom of Bavaria, 1840)