Actually "most" Dijon mustard is NOT made with wine. It's made with wine vinegar.
Grey Poupon, which most folks in US consider synonymous with Dijon mustard, IS made with wine. but none of the better brands I'm familiar with use wine.
Dijon is the capital city of Burgundy in France (it used to be a separate duchy from France). Most of the great mustards come from the Burgundy region, if not the city of Dijon, itself. My personal favorite mustard, Fallot, is made in Beaune (with no wine).
BTW, the Grey Poupon that is sold in US is now made here. fwiw.
The easiest other brand of Dijon mustard to find in US markets is MAILLE. It's pretty pungent. (and gooooood!)