French 19th century illustration of Saint Hubertus or Hubert (c. 656 ? 30 May 727). Bishop of Liège in 708 AD. He is a Christian saint who is the patron saint of hunters. mathematicians. opticians. and metalworkers. Known as the Apostle of the Ardennes. he was called upon. until the early 20th century. to cure rabies through the use of the traditional St Huberts Key