Gregory of Utrecht was an 8th-century Frankish bishop and Benedictine abbot born near Trier. As a devoted disciple of Saint Boniface, he participated in various missionary journeys alongside his mentor. After studying at the monastery in Ohrdruf, he eventually became the abbot of St. Martin's in Utrecht. From 754, he served as the administrator of the Utrecht diocese, transforming the Martinsstift into a significant center for education and learning.