In this splendid work Abbot Ferrero di Lavriano exalts the genealogical tree of the House of Savoy, which he maintains descends from a certain Beroldo, son of Ugone, duke of Saxony, born in 980 at Magdeburg. The work contains etchings of all the 34 descendants of the legendary progenitor through to Victor Amedeus II, with a description of their deeds.