Thibaud Gaudin was born in 1229, to French nobility and entered the Order of the Knights Templar pre 1260.
In 1279, Gaudin fulfilled the function of any a Commander of the land of Jerusalem. For in 1291 he rode at the side of Guillaume de Beaujeu in defence of the city of Acre, under attack from Mamluk Sultan Al-Ashraf Khalil. Guillaume de Beaujeu 21st Grand Master of the Knights Templar, died in defence of Acre on the 18th May 1291.
Gaudin remained in Acre with remaining knights of the order, and non-combatants, taking shelter in the temple of the Templar Fortress. One week passed and still the Muslim forces had not gained access to Acre. Pierre de Sevry, Marshall of the Order brokered a deal, which allowed Thibaud Gaudin, the then treasurer of the order, along with possession and non-combatants and few knights leave bound by boat for Sidon. The following day Acre fell to Muslim forces.
Upon his arrival at Sidon, Gaudin was elected as the 22nd Grand Master of the Knights Templar.
In the October of 1291, a chapter of the order met in Cyprus, at which time it was confirmed that Thibaud Gaudin was the new Grand Master, and Jacques de Molay was named Marshal, successor to Pierre de Sevry who died at Acre. In 1292 Thibaud Gaudin died, leaving the rebuilding of the Order of the Knights Templar to his successor.