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
A term commonly used to designate that period of European history between the Fall of the Roman Empire and about the middle of the fifteenth century. The precise dates of the beginning, culmination, and end of the Middle Ages are more or less arbitrarily assumed according to the point of view adopted. The period is usually considered to open with those migrations of the German Tribes which led to the destruction of the Roman Empire in the West in 375, when the Huns fell upon the Gothic tribes north of the Black Sea and forced the Visigoths over the boundaries of the Roman Empire on the lower Danube. A later date, however, is sometimes assumed, viz., when Odoacer deposed Romulus Augustulus, the last of the Roman Emperors of the West, in 476. Others, again, begin the Middle Ages with the opening years of the seventh century and the death (609) of Venantius Fortunatus, the last representative of classic Latin literature. The close of the Middle Ages is also variously fixed; some make it coincide with the rise of Humanism and the Renaissance in Italy, in the fourteenth century; with the Fall of Constantinople, in 1453; with the discovery of America by Columbus in 1492; or, again, with the great religious schism of the sixteenth century. Any hard and fast line drawn to designate either the beginning or close of the period in question is arbitrary. The widest limits given, viz., the irruption of the Visigoths over the boundaries of the Roman Empire, for the beginning, and the middle of the sixteenth century, for the close, may be taken as inclusively sufficient, and embrace, beyond dispute, every movement or phase of history that can be claimed as properly belonging to the Middle Ages.
A great part of THE CATHOLIC ENCYCLOPEDIA is devoted to the movements, ecclesiastical, intellectual, social, political, and artistic, which made up European history during this period so fertile in human activities, whether sacred or profane. Under the titles covering the political divisions of Europe, past and present (e.g., ALSACE-LORRAINE; ANHALT; AUSTRO-HUNGARIAN MONARCHY; BADEN; BAVARIA; BELGIUM; BOHEMIA; BREMEN; BULGARIA; CASTILE AND ARAGON; CROATIA; DENMARK; ENGLAND; FRANCE; GERMANY; GREECE; HAMBURG; HESSE; HUNGARY; IRELAND; ITALY; KARINTHIA; KRAIN; LEÓN; LIPPE; LÜBECK; LUXEMBURG; MECKLENBURG; MONACO; MONTENEGRO; NAVARRE; NETHERLANDS; NORWAY; OLDENBURG; PAPAL STATES; PORTUGAL; REUSS; ROME; RUMANIA; RUSSIA; SAXE-ALTENBURG; SAXE-COBURG AND GOTHA; SAXE-MEININGEN; SAXE-WEIMAR; SAXONY; SCHAUMBURG-LIPPE; SCHWARZBURG; SCOTLAND; SERVIA; SICILY; SPAIN; SWEDEN; SWITZERLAND; VENICE; WALDECK; WALES; WÜRTEMBERG), are given in detail their respective political and religious developments throughout the Middle Ages. Under articles of a wider scope (e.g. EUROPE; CHRISTENDOM; POPE) is found a more general and synthetic treatment. Particular aspects and movements peculiar to different portions of it are found in such articles as CHIVALRY; CRUSADES; ECCLESIASTICAL ART; FEUDALISM; GOTHIC ARCHITECTURE; INQUISITION; CONFLICT OF INVESTITURES; LAND-TENURE IN THE CHRISTIAN ERA; MONASTICISM; ECCLESIASTICAL MUSIC; PAINTING; PILGRIMAGES; SCULPTURE; in the articles upon the great religious orders, congregations, and institutions which then came into existence; in the biographies of the popes, rulers, historical personages, scholars, philosophers, poets, and scientists whose lives fall within this period; in the accounts of the universities, cities, and dioceses which were founded and developed throughout Europe from the fall of the Roman Empire to the time of the Reformation, and in innumerable minor articles throughout the work.