Pedro J. Silva Rei was born in Lisbon in November 1991. He has a degree in History from the Faculty of Social Sciences and Humanities of NOVA University Lisbon, for which he received the Merit and Excellence Award - Best Graduates (2014). In 2017, he completed his Master's degree in Contemporary History at the same Faculty with his dissertation: "Being a Bishop between the Monarchy and the Republic. D. António Mendes Bello, a leonine prince in Portugal (1885-1911)." After his contract as a Fellow of the Foundation for Science and Technology at the IHC - NOVA FCSH, with the doctoral project entitled "The Catholic Left and Christians for Socialism in Portugal", he is currently finalizing his doctoral project. In recent years, he has also collaborated with the Centre of Religious History Studies at the Catholic University of Portugal, integrating the research projects: "The Construction of Public Administration. The Ecclesiastical Officials of the Liberal State in the Lisbon Patriarchate (1820-1911)" (2017); "The history of a female congregation in contemporary Portugal. The Servants of Our Lady of Fatima: identity and memory" (2017-2018). He was also a member of the secretariat of the study days "Eight Centuries of Franciscan Presence in Portugal - Memory and Experience" (2018). Currently, at this institution, he is part of the coordination team for the project "25 de Abril: permanências, ruturas e recomposições" (25 April: permanences, ruptures and recompositions), taking part in the organizing committee for the seminar "Cidadania, democracia e reformismo" (Citizenship, democracy and reformism). His research interests lie in contemporary religious history, with a focus on the relationship between religion and politics, secularization and secularism, modernity and tradition. He also collaborates occasionally with press organizations, such as the digital newspaper Sete Margens and Agência Ecclesia.