Durif is actually a cross between the noble grape Syrah and the less well-known Peloursin. It was created at the University of Montpellier in the 1880s by a gentleman named Dr. Durif - a nurseryman who was looking to develop a grape variety resistant to downy mildew, one of many scourges of the vine.
Although only a few token plantings remain in France today, Durif is both successful and popular in Australia where it makes characterful, pitch-black wines. Even long-term Shiraz fans are recognising the appeal of the incredibly dark, powerful wines from Durif. In fact, it's often blended with Shiraz.