A Muslim Turned Jesuit: Baldassarre Loyola Mandes (1631-1667)

in Journal of Early Modern History
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The goal of this article is to show, through a case study of a convert from Islam to Catholicism in the seventeenth century, how multi-faceted and complex the phenomenon of conversion is, where political, social, and religious factors are intertwined. The article recounts the conversion story of Mohammed el-Attaz, later known as Baldassarre Loyola (1631-1667). Son of the king of Fez (Morocco) of the Saʿadian dynasty, Mohammed was captured on his way to Mecca by the Knights of Malta; he converted to Christianity, went to Italy, became a Jesuit, and spent some years of his life converting Muslims in Italian port cities. The story of Baldassarre Loyola is unique for many reasons. First, this is the only known case of a Muslim prince joining the Society of Jesus. Second, we have an extraordinary range of sources: more than 200 letters written by Baldassarre, Christian and Muslim first-hand sources, an unpublished Autobiography, and a 600-page unpublished Life written by Baldassarre’s spiritual director, the Jesuit Domenico Brunacci. Additionally, a sacred drama on Baldassarre’s story (El gran principe de Fez) was composed by Calderón de la Barca and performed in Jesuit colleges in Europe as well as overseas. This case study of a man between two worlds—struggling for a new identity but always linked to his ancient roots—illuminates, through the phenomenon of conversion, the tormented, rich, and fascinating relationship between Islam and Christianity on the eve of modernity.

A Muslim Turned Jesuit: Baldassarre Loyola Mandes (1631-1667)

in Journal of Early Modern History




García-Arenal and WiegersA Man of Three Worlds27.


FiumeSchiavitù mediterranee68.


EsquexSermón fúnebre16.


Emanuele Colombo“Jesuits and Islam in Seventeenth-Century Europe: War, Preaching and Conversions,” in L’Islam visto da occidente: Cultura e religione del Seicento europeodi fronte all’Islam ed. Bernard Heyberger Mercedes García-Arenal Emanuele Colombo Paola Vismara (Milano-Genova 2009) 315-340; Bernard Heyberger “Polemic Dialogues between Christians and Muslims in the Seventeenth Century” Journal of the Economic and Social History of the Orient 55 (2012): 495-516.


On this episode see Joaquin Saralle“Iñigo de Loyola y el moro de Pedrola,” Boletín de la Real Sociedad Vascongada de Amigos del País 13 (1957): 267-284; Marjorie O’Rourke Boyle Loyola’s Acts: The Rhetoric of the Self (Berkeley 1997) 60-65; John M. McManamon The Text and Contexts of Ignatius Loyola’s Autobiography (New York 2013); Paul Richard Blum How to Deal with Muslims? Raymond Lull and Ignatius of Loyola forthcoming (I am very grateful to the author who allowed me to read the manuscript before its publication).


The Congregation was founded in 1601. See Gennaro Nardi “Due opere per la conversione degli schiavi a Napoli” Asprenas 13 (1966) 170-205; Id. “Nuove ricerche sulle istituzioni napoletane a favore degli schiavi: la congregazione degli schiavi dei PP. Gesuiti” Asprenas 14 (1967) 294-313; Boccadamo Napoli e l’islam passim.


Archivio di Stato di NapoliArchivio della Real Giurisdizione Processi270. Quoted in Boccadamo Napoli e l’Islam 209-210.

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