The confraternity books (Libri vitae) of the Early Middle Ages record the names of individuals to be remembered in liturgical prayer. Since the middle of the 20th century. they have come more sharply into focus as historical source material. The records of rulers were of particular interest even then. https://www.jmannino.com/mega-pick-Royal-Nomadic-5413-Rug-Ivory-Black-limited-super/