Aurelius Ambrosius, better known in English as Saint Ambrose ( c. 330 – 4 April 397 ), was an archbishop of Milan who became one of the most influential ecclesiastical figures of the 4th century.

In each solar year ( 1 January to 31 December inclusive ), the lunar month beginning with an ecclesiastical new moon falling in the 29-day period from 8 March to 5 April inclusive is designated as the paschal lunar month for that year.

Since the ecclesiastical new moon falls on a date from 8 March to 5 April inclusive, the paschal full moon ( the 14th of that lunar month ) must fall on a date from 21 March to 18 April inclusive.

To forestall the ecclesiastical council proposed by Boniface, Philip summoned the three estates of his realm to meet at Paris in April.

Of great importance in the ecclesiastical history of England was a council which Stephen opened at Osney on 17 April 1222 ; its decrees, known as the Constitutions of Stephen Langton, are the earliest provincial canons which are still recognized as binding in English church courts.

At the Synod of Aachen on 28 April 862, the bishops of Lotharingia approved this union, contrary to ecclesiastical law.

Crowborough as a place in its own right came into being in 1880, when an ecclesiastical parish was formed from that at nearby Rotherfield ; a civil parish was established on 6 April 1905 ; which in turn became a Town Council on 24 May 1988.

On April 5, 1822 he was ordained a Roman Catholic priest for the Diocese of Bamberg, after studying at Bamberg, and in 1823 he became professor of ecclesiastical history and canon law in the lyceum at Aschaffenburg.

On April 23, 1985, three of the four remaining priests " formally and publicly " took an " Abjuration of Error and Profession of Faith ad cautelam " before Bishop Musey in case, through their previous actions, they had incurred any ecclesiastical censures.

* April 25-James Laderchi, ecclesiastical historian

As of 17 April 2011, the ecclesiastical jurisdiction statistics is as follows ; 13 Patriarchates, 2 Major Archdioceses, 542 Metropolitan Archdioceses, 80 Archdioceses, 2, 179 Dioceses, 47 Prelatures, 10 Territorial Abbeys, 17 Apostolic Exarchates, 8 Ordinariates, 36 Military Ordinariates, 84 Apostolic Vicariates, 38 Apostolic Prefectures, 10 Apostolic Administrations, and 9 Missions ' sui juris '.

After two years of negotiations, Pope Gregory IX, an alumnus of Paris himself, on April 13, 1231 issued the Bull Parens scientiarum, honoring the University as the " Mother of Sciences ", which retrospectively has been called the Magna Carta of the University of Paris, because it guaranteed the school independence from local authority, whether ecclesiastical or secular, placing it directly under papal patronage.

* Matriz Church of São Martinho-the parochial church is located in the middle of the main village, and includes two minor alters ( with an image of Nossa Senhora do Rosário and Nosso Senhor Crucificado ) and a main alter ( with an image of its patron saint São Martinho ); the ecclesiastical parish of Alfaião pertained to the Monastery of Castro de Avelãs since 1490, the archbishop of Braga assigning the abbot at the time ; between 1501 – 1514, its clergy were served from the monastery ; the construction of the current church occurred in the 17th century ; the first baptisms were registered in 1627 ; the first marriage was documented in 1628 ; in 1706, its second parish priest Father Carvalho da Costa, who was assigned by a canon at the Sé Church in Miranda, earned 150 $ 000 réis, the parish included 66 neighbours ; the first death was recorded in 1724 ; by 21 April 1758, the parish which was located between two mounts and pertained to the bishop of Miranda do Douro, comarca and seat of Bragança, and was subject to the House of Braganza.

Finally, on 4 April 1861, King Pedro V of Portugal decreed the creation of a new ecclesiastical parish, to include Ponta, Fajã Grande and Cuada, centred on the Church of São José da Fajã Grande ( the responsibility of the Bishop of Angra, friar Estêvão de Jesus Maria, dated 20 June 1861.

Sapienza University of Rome was founded in 1303 with the Papal bull In supremae praeminentia dignitatis issued on 20 April 1303 by Pope Boniface VIII, as a Studium for ecclesiastical studies more under his control than the universities of Bologna and Padua.

It was only on April 3, 1854 that ecclesiastical independence was granted to Nasonog by the Governor-General ( the Marqués de Novaliches ) with the corresponding approval from the Archbishop of Manila, having Don Marcos Bartolomé as its first interim parish priest.

Saint Iustin Popović ( Serbian Cyrillic: Jустин Поповић ) ( 6 April 1894, Vranje-7 April 1979, Ćelije Monastery, Lelić ) was an Eastern Orthodox theologian, archimandrite of the Ćelije Monastery, Dostoyevski scholar, a champion of anti-communism, a writer, and a critic of the pragmatic church ( ecclesiastical ) life.

On seeking ecclesiastical permission, however, they were commissioned by Cardinal Barbaro, Prefect of the Propaganda Fide, to begin their work by founding a seminary in Belgium to supply priests for the beginning mission, and laid the foundations of the Scheutveld College, 28 April 1863, in the Field of Scheut, a short distance from Brussels, so the C. I. C. M.

The Dominican fathers accepted the ecclesiastical administration of this town on April 26, 1590.

On April 10, 1910 the Diocese of Zamboanga was created and took all ecclesiastical territories in Mindanao away from Cebu.

Born in Felina di Reggio Emilia, Sergio Pignedoli studied at the seminary in Reggio Emilia, the Catholic University of Milan ( where he received a doctorate in ancient studies ), the Pontifical Lateran University ( obtaining a doctorate in theology ), and the Pontifical Gregorian University ( master's in ecclesiastical history ) before being ordained a priest on April 1, 1933.

During the negotiations which followed concerning the execution of the Concordat of 1801 he displayed a conciliatory spirit in dealing with the ten constitutional bishops who were to be appointed to as many of the newly-established dioceses ; in fact, he went contrary to specific instructions from Rome, under persistent pressure exerted by Napoleon Cardinal Caprara officiated at the Solemn restoration of public worship in the cathedral of Notre-Dame on Easter Day ( 18 April 1802 ), at which function the First Consul, the high officers of state, and the new ecclesiastical dignitaries assisted.

In May 1948 Thomas and his family moved to his final home, the Boat House at Laugharne purchased for him at a cost of £ 2, 500 in April 1949 by Margaret Taylor, first wife of historian A. J. P. Taylor.

Edward Gibbon ( 27 April 173716 January 1794 ) was an English historian and Member of Parliament.

Frederick Charles Copleston, SJ, CBE ( 10 April 1907 – 3 February 1994 ) was a Jesuit priest, philosopher, and historian of philosophy.

Henry Chadwick ( October 5, 1824 – April 20, 1908 ), often called the " father of baseball ," was a sportswriter, baseball statistician and historian.

Saint Isidore of Seville ( Spanish: or, Latin: ) ( c. 560 – 4 April 636 ) served as Archbishop of Seville for more than three decades and is considered, as the historian Montalembert put it in an oft-quoted phrase, " the last scholar of the ancient world ".

Paul the Deacon ( c. 720s – 13 April probably 799 ), also known as Paulus Diaconus, Warnefred, Barnefridus and Cassinensis, ( i. e. " of Monte Cassino "), was a Benedictine monk and historian of the Lombards.

According to German historian Gunther Wolf, the high point of Boniface's career was the Concilium Germanicum, organized by Carloman in an unknown location in April 743.

Prince Nikolai Sergeyevich Troubetzkoy ( also Trubetskoy ; Russian: ; Moscow, April 16, 1890 – Vienna, June 25, 1938 ) was a Russian linguist and historian whose teachings formed a nucleus of the Prague School of structural linguistics.

* April 11 – Edgar V. Saks, Estonian statesman and historian ( b. 1910 )

* April 4 – Daniel Neal, English historian ( b. 1678 )

* April 16 – Alexis de Tocqueville, French historian ( b. 1805 )

* April 10 – Moritz Cantor, German historian of mathematics ( b. 1829 )

* April 14 – Arnold J. Toynbee, British historian ( d. 1975 )

* April 22 – Mircea Eliade, Romanian historian of religions and writer ( b. 1907 )

* April 3 – James Anderson, Scottish historian ( b. 1662 )

* April 22 – Ferenc Oslay, Hungarian-Slovene historian, writer and irredenta ( b. 1883 )

* April 2 – Thomas Carte, English historian ( b. 1686 )

* April 12 – Charles Burney, English music historian ( born 1726 )

* April 6 – John Stow, English historian and antiquarian ( b. 1525 )

* April 11 – Emanuel van Meteren, Flemish historian ( b. 1535 )

* April 13 – Paul the Deacon, Benedictine monk and historian

* April 10 – Jean Lebeuf, French historian ( b. 1687 )

* April 27 – Edward Gibbon, English historian ( d. 1794 )

* April 12 – Charles Burney, English music historian ( d. 1814 )

* April 21 – Robert Beverley, Jr., historian of Colonial Virginia ( b. 1673 )