Goetz is the short form of all male first names, which are formed with "God", that Gottfried ("He stands under God's protection"), Gottlieb (love = body -> "God child"), Gotthold ("The under God's goodness and Grace is "), Godfrod, Godo, etc. Götz von Berlichingen, who was called by Goethe famously Knight Jaxthausen, Gottfried.
(Sent from: Götz Wittneben)