He was sued, arrested, tortured and beheaded for forging wills and other legal documents.
[1] Meanwhile, he specialized in writing local histories, highlighting the prominence of whichever family hired him to do so.
[1] Ceccarelli authored a false version of Chronicae Gualdenses, a lost medieval text about Umbria, and used it as a source for his own studies.
[2] The genealogical study suggested the House of Grimaldi descended from Normandy, which was false.
[1] In the seventeenth century, Ceccarelli's research was used as a source by Charles de Venasque-Ferriol, a Monegasque courtier who authored Genealogica et Historica Grimaldœ Gentis arbor in 1647 with the aim of linking the House of Grimaldi to the French royal family.