An Etymological Dictionary of the German Language/Annotated/Fähndrich

Fähndrich, Fähnrich, ‘cornet, ensign,’ like Gänserich, first formed in Modern High German from the shorter Middle High German word; compare Middle High German vęnre (the Modern High German d is excrescent, as in schaudern, minder), Old High German faneri, masculine, ‘standard-bearer.’