John Albert I, in older literature known as ''John'' or'' Johann'' (23 December 1525 – 12 February 1576), was the reigning duke of
Mecklenburg-Güstrow
Mecklenburg-Güstrow was a state of the Holy Roman Empire in Northern Germany, that existed on three occasions ruled by the House of Mecklenburg at Güstrow.
History
A first short-lived predecessor existed after the death of Henry IV, Duke of M ...
from 1547 to 1556 and of
Mecklenburg-Schwerin
The Duchy of Mecklenburg-Schwerin () was a duchy in northern Germany created in 1701, when Frederick William, Duke of Mecklenburg-Schwerin, Frederick William and Adolphus Frederick II, Duke of Mecklenburg-Strelitz, Adolphus Frederick II divided ...
from 1556 to 1576. In 1549 John Albert I saw to it that the parliament of Mecklenburg carried through the
Reformation
The Reformation, also known as the Protestant Reformation or the European Reformation, was a time of major Theology, theological movement in Western Christianity in 16th-century Europe that posed a religious and political challenge to the p ...
for the entire duchy.
Biography
John Albert was born in
Güstrow
Güstrow (; ) is a town in Mecklenburg-Vorpommern in north-eastern Germany. It is capital of the Rostock (district), Rostock district; Rostock itself is a district-free city and regiopolis.
It has a population of 28,999 (2020) and is the sevent ...
, the eldest son of the Duke
Albrecht VII of Mecklenburg-Güstrow and his wife
Anne of Brandenburg. Until the age of 13, he was educated by the "
papist
The words Popery (adjective Popish) and Papism (adjective Papist, also used to refer to an individual) are mainly historical pejorative words in the English language for Roman Catholicism, once frequently used by Protestants and Eastern Orthodox ...
vicar
A vicar (; Latin: '' vicarius'') is a representative, deputy or substitute; anyone acting "in the person of" or agent for a superior (compare "vicarious" in the sense of "at second hand"). Linguistically, ''vicar'' is cognate with the English p ...
"
Johann Sperling. In 1539, his father sent him to the court of his uncle, the
protestant
Protestantism is a branch of Christianity that emphasizes Justification (theology), justification of sinners Sola fide, through faith alone, the teaching that Salvation in Christianity, salvation comes by unmerited Grace in Christianity, divin ...
Elector
Joachim II of Brandenburg, where he was educated together with the Elector's son and John Albert's cousin
John George. From 1541 to 1544, they attended the newly founded
University of Frankfurt an der Oder together. John Albert was a devout supporter of
Protestantism
Protestantism is a branch of Christianity that emphasizes Justification (theology), justification of sinners Sola fide, through faith alone, the teaching that Salvation in Christianity, salvation comes by unmerited Grace in Christianity, divin ...
when he returned to Mecklenburg. Nevertheless, he fought on the imperial side in the
Schmalkaldic War
The Schmalkaldic War (; July 1546May 1547) was fought within the territories of the Holy Roman Empire between the allied forces of Charles V, Holy Roman Emperor and Maurice, Duke of Saxony against the Lutheran Schmalkaldic League, with the forc ...
, at his father's request.
When his father died in 1547, John Albert and his brothers
Ulrich III and
George were jointly invested with the Duchy of Mecklenburg-Güstrow by Emperor
Charles V Charles V may refer to:
Kings and Emperors
* Charles V, Holy Roman Emperor (1500–1558)
* Charles V of Naples (1661–1700), better known as Charles II of Spain
* Charles V of France (1338–1380), called the Wise
Others
* Charles V, Duke ...
. Initially, John Albert administered the
Mecklenburg-Güstrow
Mecklenburg-Güstrow was a state of the Holy Roman Empire in Northern Germany, that existed on three occasions ruled by the House of Mecklenburg at Güstrow.
History
A first short-lived predecessor existed after the death of Henry IV, Duke of M ...
part of the Duchy alone, while Ulrich administered the
Bishopric of Schwerin
The Diocese and Prince-bishopric of Schwerin was a Catholic diocese in Schwerin, Mecklenburg, in Germany. The first registered bishop was ordained in the diocese in 1053, and the diocese ceased to exist in 1994.
Pre-Reformation Catholic (prince ...
from 1550 as successor to his cousin
Magnus III and George fought in the Schmalkaldic War and fell in 1552 before
Frankfurt am Main
Frankfurt am Main () is the most populous city in the States of Germany, German state of Hesse. Its 773,068 inhabitants as of 2022 make it the List of cities in Germany by population, fifth-most populous city in Germany. Located in the forela ...
.

As a convinced adherent of
Protestantism
Protestantism is a branch of Christianity that emphasizes Justification (theology), justification of sinners Sola fide, through faith alone, the teaching that Salvation in Christianity, salvation comes by unmerited Grace in Christianity, divin ...
John Albert I, unlike his father, decided to back the introduction the
Reformation
The Reformation, also known as the Protestant Reformation or the European Reformation, was a time of major Theology, theological movement in Western Christianity in 16th-century Europe that posed a religious and political challenge to the p ...
in his lands. In 1549 he presided over a meeting of the Estates in
Sternberg, which prescribed the
Lutheran
Lutheranism is a major branch of Protestantism that emerged under the work of Martin Luther, the 16th-century German friar and Protestant Reformers, reformer whose efforts to reform the theology and practices of the Catholic Church launched ...
faith for all parts of Mecklenburg. This can be seen as the official introduction of Lutheranism as the state religion in Mecklenburg. In February 1550, he concluded a defensive alliance with Margrave
John
John is a common English name and surname:
* John (given name)
* John (surname)
John may also refer to:
New Testament
Works
* Gospel of John, a title often shortened to John
* First Epistle of John, often shortened to 1 John
* Second E ...
of Brandenburg-Küstrin and Duke
Albert of Prussia, to whose daughter,
Anna Sophia, he was engaged and later married. On 22 May 1551, John Albert concluded the secret
Treaty of Torgau with the other Protestant princes in northern Germany. This treaty formed the legal framework for the
Princes' rebellion of 1552 against Emperor
Charles V Charles V may refer to:
Kings and Emperors
* Charles V, Holy Roman Emperor (1500–1558)
* Charles V of Naples (1661–1700), better known as Charles II of Spain
* Charles V of France (1338–1380), called the Wise
Others
* Charles V, Duke ...
, in which John Albert I participated.
His uncle
Henry V Henry V may refer to:
People
* Henry V, Duke of Bavaria (died 1026)
* Henry V, Holy Roman Emperor (1081/86–1125)
* Henry V, Duke of Carinthia (died 1161)
* Henry V, Count Palatine of the Rhine (–1227)
* Henry V, Count of Luxembourg (1216–1281 ...
, who ruled
Mecklenburg-Schwerin
The Duchy of Mecklenburg-Schwerin () was a duchy in northern Germany created in 1701, when Frederick William, Duke of Mecklenburg-Schwerin, Frederick William and Adolphus Frederick II, Duke of Mecklenburg-Strelitz, Adolphus Frederick II divided ...
, died in 1552 without a male heir. When John Albert's brother Ulrich then claimed the inheritance, the Emperor objected. A violent inheritance dispute erupted. Ulrich forced John Albert to consent to the Treaty of Wismar of 11 March 1555. The dispute was finally resolved in 1556 by the ''Edict of Ruppin'' by Elector
Joachim II of Brandenburg. This edict made John Albert I regent of the western part of Mecklenburg, while Ulrich received the eastern part, the former Lordship of
Werle {{Infobox country
, native_name = ''Herrschaft Werle'' (Standard German, de)
, conventional_long_name = Lordship of Werle
, common_name = Werle
, era = Middle Ages
, status = Vassal
, em ...
, while maintaining a common state government. Ulrich chose Güstrow as his residence.
Duke John Albert was considered a modern Renaissance prince and a patron of the arts and sciences, with an open mind for the scientific discoveries of his time. He committed himself to the
Reformation
The Reformation, also known as the Protestant Reformation or the European Reformation, was a time of major Theology, theological movement in Western Christianity in 16th-century Europe that posed a religious and political challenge to the p ...
and modernized the state. He possessed an extensive library, which eventually came into the possession of the
University of Rostock
The University of Rostock () is a public university located in Rostock, Mecklenburg-Vorpommern, Germany. Founded in 1419, it is the third-oldest university in Germany. It is the oldest university in continental northern Europe and the Baltic Se ...
. He was interested in scientific instruments and in astronomy and cartography. He employed
Tilemann Stella as his court librarian and cartographer. They jointly visited the imperial court in
Vienna
Vienna ( ; ; ) is the capital city, capital, List of largest cities in Austria, most populous city, and one of Federal states of Austria, nine federal states of Austria. It is Austria's primate city, with just over two million inhabitants. ...
, where they studied architecture and modern fortification techniques, which they subsequently applied in Mecklenburg. The Ducal Court in
Wismar
Wismar (; ), officially the Hanseatic City of Wismar () is, with around 43,000 inhabitants, the sixth-largest city of the northeastern German state of Mecklenburg-Vorpommern, and the fourth-largest city of Mecklenburg after Rostock, Schwerin and ...
and the expansion of various ducal castles and modern fortifications date back to John Albert's intentions, although he did not always have sufficient resources to finance his efforts. Among his major achievements are the creation of several high schools: in
Güstrow
Güstrow (; ) is a town in Mecklenburg-Vorpommern in north-eastern Germany. It is capital of the Rostock (district), Rostock district; Rostock itself is a district-free city and regiopolis.
It has a population of 28,999 (2020) and is the sevent ...
in 1552, in
Schwerin
Schwerin (; Mecklenburgisch-Vorpommersch dialect, Mecklenburgisch-Vorpommersch Low German: ''Swerin''; Polabian language, Polabian: ''Zwierzyn''; Latin: ''Suerina'', ''Suerinum'') is the Capital city, capital and List of cities and towns in Germ ...
in 1553 and in
Parchim
Parchim (; Mecklenburgisch-Vorpommersch dialect, Mecklenburgisch-Vorpommersch: ''Parchen'') is a town in Mecklenburg-Vorpommern, Germany. It is the capital of the Ludwigslust-Parchim district. It was the birthplace of Helmuth von Moltke the Elde ...
in 1554. He died in
Schwerin
Schwerin (; Mecklenburgisch-Vorpommersch dialect, Mecklenburgisch-Vorpommersch Low German: ''Swerin''; Polabian language, Polabian: ''Zwierzyn''; Latin: ''Suerina'', ''Suerinum'') is the Capital city, capital and List of cities and towns in Germ ...
.
Marriage and issue

On 24 February 1555 he married
Anna Sophia of Prussia (11 June 1527 – 6 February 1591), the daughter of Duke
Albert of Prussia. The couple had three children:
*Albert (1556–1561), Duke of Mecklenburg
*
John VII (* 1558, † 1592), Duke of Mecklenburg-Schwerin from 1576 to 1592
*
Sigismund August, Duke of Mecklenburg (1560–1600), married
Clara Maria of Pomerania-Barth
References
*
Friedrich Wilhelm Schirrmacher
Friedrich Wilhelm Schirrmacher (28 April 1824 in Danzig – 19 June 1904 in Rostock) was a German historian. He is best known for the discovery of the original files and protocols of the Marburg Colloquy. The original texts are reprinted until t ...
: ''Johann Albrecht I. Herzog von Mecklenburg'', 2 vols., Wismar, 1885
*
*
External links
*
Genealogical table of the House of Mecklenburg
{{DEFAULTSORT:John Albert 01 Mecklenburg
Dukes of Mecklenburg-Güstrow
Dukes of Mecklenburg-Schwerin
House of Mecklenburg
1525 births
1576 deaths
16th-century German nobility
Burials at Schwerin Cathedral