September 10 - Aubert was born near Avranches around 670 into the family of the Lords of Genêts, at the time of King Childebert IV. After the death of his family, he distributes his inheritance to the poor and becomes a priest.
A charitable and wise man, he was elected bishop of Avranches in 704 upon the death of his predecessor. The bishop delivered his faithful from a dragon harassing their flock: by the sign of the cross and by throwing his stole on the animal, he commanded it to go to the sea and not to reappear. Aubert had a vision in which the Archangel Michael ordered him to build a church on the rocky tidal island at the mouth of the Couesnon. This steep rock rose, arid and solitary, in a bay formed by the meeting of the coasts of Normandy and Brittany. One night, Aubert received three times during his sleep the order from the Archangel Saint Michael to have a church erected on the Mont Tombe in his honor, a mountain where he retired to indulge in prayer and meditation. Given the state of this rocky point, barely attached to the mainland, covered with scrub and brambles and only inhabited, apart from wild beasts, by a few hermits, he considered this impossible and thought first of an artifice of the Evil One. It is only with the third injunction that he obeyed after the Archangel, in order to put an end to his hesitations, strongly pressed his finger on his forehead and left a mysterious imprint there. Aubert woke up with this hollow on his forehead and understood the veracity of the archangelic order.
Providence then guided him in his task: a round dewdrop one morning in September showed him the round shape of the oratory, and a bull strangely tied just there showed its location. A fresh water spring was discovered nearby. A well was dug, and the square was leveled. A pagan cult stone that stood on this site was overturned by a local farmer and his twelve sons only by the intervention of his newest son, held in the arms of Aubert, who pressed the child against the stone. After a new dream, Aubert sent two monks to inquire at the sanctuary of Mount Gargano in Italy, dedicated to Saint Michael. Then, on October 16, 709, the bishop dedicated the church and installed a chapter of twelve canons. The Mont Saint-Michel left its name of "Mont Tombe" to take that of Mont-Saint-Michel-au-péril-de-la-Mer: the Abbey of Mont-Saint-Michel was born.
At the death of S. Aubert, his body was probably placed in a stone sarcophagus, as was the Merovingian custom and, according to his wishes, placed in the choir of Mont-Saint-Michel, with his head towards the altar, the canons keeping his skull and right arm as relics. The skull was saved from the revolutionary pangs in 1792 by a doctor, who used the pretext of his status as a doctor to recover the relic of the skull for study purposes. When peace returned, he restored it to the clergy of Avranch. The reliquary of his arm, on the other hand, had disappeared. In 1856, his skull was transferred to the Basilica of Saint-Gervais-et-Saint-Protais in Avranches, where it has been kept ever since in his treasury.
