Friedrich Kluge2507843An Etymological Dictionary of the German Language, V — vorn1891John Francis Davis
vorn, adv., ‘in front, before,’ from the equiv. MidHG. vorn, vorne (vornen, vornân); in OHG. the equiv. forna is used only in dialects as an adv. of place. A derivative of Teut. for-, appearing in vor and für.