Saint Hubertus or Hubert (c. 656 – 30 May 727) was a Christian saint who became the first bishop of Liège in 708 AD. He was 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 Hubert's Key.

Saint Hubertus was widely venerated during the Middle Ages. The iconography of his legend is entangled with the legend of martyr Saint Eustace. The Bollandists published seven early lives of Hubertus (Acta Sanctorum, November, i., 759–930 AD); the first of these was the work of a contemporary, though it is very sparing of details.

He died 30 May 727 AD in or near a place called (in Latin) Fura. In the later Middle Ages, this place was claimed to have been identified as Tervuren near Brussels, but recent scholarship considers Voeren (Fourons), a location much closer to Liège than Brussels, to be the likelier resting place. His feast day is 3 November.

His other skills were mathematics and metalwork.

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