addressed his "mirror of princes" work De Institutione laicali to Matfrid.

A second Matfrid, presumed to be the son of the first, was active in Lotharingia during the reigns of Lothar and his son Lothar II, a frequent witness to their charters in the period from 843 to 860. A third Matfrid, presumed son of the second, was active in the period 867 to 878. However he may have been the same person as