Saint Gangulphus of Burgundy is venerated as a martyr by the Catholic Church. Gangulphus was a Burgundian courtier whose historical existence can only be attested by a single document: a deed from the court of Pepin the Short dated 762. It attests that he was a great landowner, whose family dominated the region and exercised a lot of power.
Gangulphus decided to renounce his wealth and become a hermit. Even so, he was subsequently killed by his wife's lover, who wished to remove Gangulphus as a possible interference to the adulterous relationship.