He was born at Provins to the French nobility, his father being Arnoul, Count of Champagne.

[4] Theobald left home with a friend named Walter to become a hermit at Suxy in the Ardennes.

After Walter died, Theobald joined a group of hermits who had gathered in the area under the guidance of the founder of the Camaldolese, Romuald.

[4] Theobald's mother, Gisela, received the permission of her husband to stay with their son and became a hermit herself near this place of retreat.

His relics were translated to a monastery nears Sens, and then to Auxerre, at the Priory of Saint-Thibault-en-Auxois, Côte-d'Or.