Saint Adele was a daughter of King Dagobert II of Germany. She became a nun upon the death of her husband, making provisions for her son, the future father of St. Gregory of Utrecht. She founded a convent at Palatiolum near Trier and became its first Abbess, ruling with holiness, prudence, and compassion.
Saint Adele seems to have been among the disciples of St. Boniface, the Apostle of Germany, and a letter in his correspondence is addressed to her. After a devout life filled with good works and communion with God, she passed on to her heavenly reward in 730.