De Mattei Believes He Knows Viganò's "Ghostwriter"
Viganò has forcefully denied de Mattei's claim. According to De Mattei, the "ghostwriter" is a certain Pietro Siffi, 52, who uses different pseudonyms, among them "Cesare Baronio" (OpportuneImportune.blogspot.com). He helped organising Viganò's May 2020 appeal collecting the signatures using his name and email.
De Mattei argues with what he calls a "stylometric" research and compares Viganò's and Siffi's texts, their lexical and stylistic elements. Both use similar phrases, creative words and ideas like “idol” for Vatican II, “Montinian rite” for the New Mass etc. Besides verbal coincidences there is "the same tone," de Mattei believes.
Siffi stopped publishing on his blog in 2020 when Viganò started writing more frequently. De Mattei questions not Siffi’s intelligence but his integrity. Venice born Siffi was a seminarian with PiusX and with Institute of Christ the King, but left both places.
In 2010, he started a business for interior design providing furnishing accessories and exclusive art fabrics. A year later, Siffi founded together with a certain Fabio Zardi a decoration studio which deals with floral design and organises weddings, homosex pseudo-weddings included - as announced on their business website.
Siffi’s “current or former” business partner Zardi shared the same phone number. De Mattei calls Siffi a “gay-friendly figure” judging from his public appearance but says he doesn't want to enter into Siffi's “private life.”
Last year, Viganò was criticised for his English translator.