Friedrich Bernard Christian Maassen
United Sees of Macerata and Tolentino
Vicariate Apostolic of Mackenzie
Marie-Edmé-Patrice-Maurice de MacMahon
Joseph-Anna-Marie de Moyria de Mailla
François-Pierre-Gonthier Maine de Biran
Françoise, Marquise de Maintenon
Joseph-Marie, Comte de Maistre
Marcellinus of Civezza, O.F.M.
Margaret of the Blessed Sacrament
Prefecture Apostolic of Mariana Islands
Congregation of the Missionaries of Mariannhill
Sts. Maris, Martha, Audifax, and Abachum
Lucius Perpetuus Aurelianus Marius Maximus
Vicariate Apostolic of Marquesas Islands
Moral and Canonical Aspect of Marriage
Diocese of Marseilles (Massilia)
Vicariate Apostolic of the Marshall Islands
Diocese of Marsico Nuovo and Potenza
Luigi Ferdinando, Count de Marsigli
Missionaries of the Company of Mary
Servants of Mary (Order of Servites)
Society of Mary (Marist Fathers)
St. Mary Frances of the Five Wounds of Jesus
Richard Angelus a S. Francisco Mason
Devises and Bequests for Masses (United States)
Feast of the Maternity of the Blessed Virgin Mary
Marcus Aurelius Valerius Maximianus
Caius Julius Verus Maximinus Thrax
Prefecture Apostolic of Mayotte, Nossi-Bé, and Comoro
Charles Joseph Eugene de Mazenod
Abbey and Congregation of Melk
Vicariate Apostolic of Méndez and Gualaquiza
Francisco Sarmiento de Mendoza
Corporal and Spiritual Works of Mercy
Sisters of Mercy of St. Borromeo
Frédéric-François-Xavier Ghislain de Mérode
Delegation Apostolic of Mesopotamia, Kurdistan, and Armenia
Metal-Work in the Service of the Church
Prince Klemens Lothar Wenzel von Metternich
Francis, Joseph, and Paul Mezger
Military Orders of St. Michael
Giovanni Francesco Pico della Mirandola
Congregation of the Sisters of Misericorde
Prefecture Apostolic of Misocco and Calanca
Congregation of Priests of the Mission
Congregation of Missionaries of St. Charles Borromeo
Missionaries of St. Francis de Sales of Annecy
Missionary Society of St. Paul the Apostle
Mission Indians (of California)
Catholic Indian Missions of Canada
Catholic Indian Missions of the United States
François-Napoléon-Marie Moigno
Diocese of Molfetta, Terlizzi, and Giovinazzo
Jean-Baptiste Poquelin Molière
Principality and Diocese of Monaco
Canonical Erection of a Monastery
Monophysites and Monophysitism
Monothelitism and Monothelites
Montagnais Indians (Chippewayans)
Charles-Forbes-René, Comte de Montalembert
Marquis de Louis-Joseph Montcalm-Gozon
Diocese of Monterey and Los Angeles
Charles-Louis de Secondat, Baron de Montesquieu
Anne, First Duke of Montmorency
Alexis-François Artaud de Montor
Antoine-Jean-Baptiste-Robert Auget, Baron de Montyon
Dioceses of Mostar and Markana-Trebinje
Feast of the Most Pure Heart of Mary
Toribio de Benavente Motolinia
Congregations of Mount Calvary
Feast of Our Lady of Mount Carmel
Karl Ernst, Freiherr von Moy de Sons
Johann Chrysostomus Wolfgang Amadeus Mozart
St. Clair Augustine Mulholland
Baron Eligius Franz Joseph von Münch-Bellinghausen
Archdiocese of Munich-Freising
English naturalist and historian, b. in Yorkshire, 22 June, 1735; d. at Prague in Bohemia, 23 Feb., 1809. Little is known of his education except that he seems to have imbibed deistic ideas in his youth. He left England about 1754 and went to Paris. Here the study of Rossuet's "Discours sur l'histoire universelle" exerted a profound influence upon him, and in 1756 he was received into the Catholic Church by the Archbishop of Paris. Upon the outbreak of the war between France and England in the same year, he went to Spain, where he enlisted in a regiment of dragoons, and afterwards became a student at the military academy of Barcelona. He soon abandoned, however, the idea of a military career, and went to Belgium, where he entered the Chartreuse monastery at Nieuport, the sole English house of the order. After his profession his leisure was devoted to scientific study, and his memoir "Théorie des causes physiques des mouvements des corps célestes d'après les principes de Newton", won for him membership in the Imperial Academy of Brussels. He became prior of his monastery in 1764, but left the order thirteen years later, after having obtained a Bull of secularization and also the privilege of possessing a benefice. He took up his residence at Brussels and received a prebend in the Chapter of Notre-Dame de Courtrai. In 1787 he was chosen perpetual secretary of the Brussels Academy, and carried on numerous meteorological observations under its auspices. The invasion of the French in 1794 forced him to leave Belgium, and, after travelling in Germany and England, he finally settled at Prague, where he continued his literary labours until his death. Mann was a laborious student and a versatile writer. He is said to have refused the Bishopric of Antwerp offered him by Emperor Joseph II, rather than abandon his favourite studies.
His principal literary works, conspicuous for their erudition, were: "Mémoire et lettres sur l'étude de la langue grecque" (Brussels, 1781); "Mémoire sur la conservation et le commerce des grains" (Mechlin, 1764); "Abrégé de l'histoire ecclesiastique, civile, et naturelle de la ville de Bruxelles et de ses environs" (Brussels, 1785), in collaboration with Foppens; "Histoire du règne de Marie Thérèse" (Brussels, 1781; 2nd ed., 1786); "Recueil de mémoires sur les grandes gelées et leurs effets" (Ghent, 1792); "Principes métaphysiques des êtres et des connaissances" (Vienna, 1807), and numerous papers in the "Mémoires" of the Brussels Academy. He was also the translator of an English work, which was published under the title "Dictionnaire des Jardiniers et des Cultivateurs" (Brussels, 1786-9).
REIFFENBERG, Eloge de l'Abbe Mann in Annuaire de la Biblioth. royale de Belgique (Brussels, 1850), 77, SECCOMBE in Dict. Nat. Biog., s. v.; REGNABD in Nouvelle Biogr. Gen., s. v.
HENRY M. BROCK