The Fraknói Research Group is the intellectual heir and successor to the work of the eponymous Vilmos Fraknói. Its historical series, the Collectanea Vaticana Hungariae, published since 2004, is a continuation of Fraknói's Monumenta Vaticana Hungariae. The essence of the research group's work is that while the place of research and presentation of results is predominantly Rome, the processing work is carried out in domestic research centres, above all at the PPKE (Péter Pázmány Catholic University, Budapest). Research in the Vatican is usually carried out individually or in small units. For the first time in the history of its existence, the Fraknói Research Group has organised a joint research trip to Rome, from 29 May to 4 June 2023. The archival expedition included Kornél Szovák, Director of the Moravcsik Institute, who is a leading member of the team as Secretary of the CVH Editorial Board. The infrastructure was provided by the renovated St. Stephen's House. On Wednesday morning, 31 May, members of the Research Team paid a courtesy visit to the Bishop-Prefect of the Vatican Apostolic Archives. Mons. Sergio Pagano has been a supporter of the work of the Fraknói Research Group since the CVH's inception, presenting and praising its achievements in Budapest in 2015 and in Rome in 2022.