 The chief illuminator was Johannes de Monterchio, while the frontispiece was by Peronet Lamy.Second, Pietro commissioned an illustrated copy of the "Notitia Dignitatum" in 1436; it now resides as in the Bodleian Library.The manuscript of the "Notitia" which Pietro had copied was one he had found in Speyer, the "Codex Spirensis" earlier that year attending the council at Basel; its discovery influenced the "Roma instaurata" of Flavius Blondus.