The first volume of an estimable three-volume series (see below), it provides pedigrees of descent from Charlemagne that can be proved without a doubt. The progeny of Royal Houses of Europe that trace back to Charlemagne are listed in chronological order under their respective Houses. Then, individual chapters list American families that link up with one or more royal lines, and pertinent facts are given for each member of the family--birth, marriage, children, connecting lines, station, distinctions, and honors.