Robert was born about 1029 near Troyes, a younger son of Thierry and Ermengarde, nobles of Champagne. He entered the Benedictine abbey of Montier-la-Celle near Troyes at age fifteen and rose to the office of prior.
He was made the abbot of Saint Michel-de-Tonnerre around the year 1070, but he soon discovered that the monks were quarrelsome and disobedient, so he returned to...