Christian was born about 1180 in the Duchy of Pomerania, possibly in the area of Chociwel ( according to Johannes Voigt ).

With the German colonization, the Empire increased in size and came to include the Duchy of Pomerania as well as Bohemia and the March of Moravia.

Within the Duchy of Pomerania, Kolberg was the urban center of the secular reign of the Cammin bishops and their residence throughout the High and Late Middle Ages.

After Boleslaw's death, the Duchy of Pomerania regained independence, before the dukes became vassals of Denmark and the Holy Roman Empire in the late 12th century.

In the Middle Ages, the area was ruled by the Pomeranian dukes as part of the Duchy of Pomerania.

Weary of the long struggle with the Duchy of Pomerania, he abdicated in 1470 in favour of his younger brother Albert Achilles, he retired to the Bayreuth Principality and died one year later in Neustadt an der Aisch.

During the Thirty Years ' War Sweden gained tracts in Germany as well, including Western Pomerania, Wismar, the Duchy of Bremen, and Verden.

In the 1180s, Mecklenburg and the Duchy of Pomerania came under Danish control, too.

The bulk of Pomerania was however made an independent Pomeranian bishopric, set up in the territory of the Duchy of Pomerania in 1140, after Bolesław had died in 1138 and the duchy had broken away from Poland.

* Duchy of Pomerania

In 1410 Bogusław VIII gave a tribute to Polish king Władysław Jagiełło It became part of the Duchy of Pomerania in 1478.

The territory of the Duchy of Pomerania was partitioned between Brandenburg-Prussia and Sweden.

His son, Casimir III the Great, inherited Lesser Poland, the Duchy of Sandomierz, Greater Poland, Kuyavia, and the Duchies of Łęczyca and Sieradz, while Silesia and Lubusz Land to the west, along with Gdańsk Pomerania, Western Pomerania, and Mazovia to the north remained beyond the Kingdom's borders.

When Swedish forces had entered the Duchy of Pomerania in 1630 and subsequently cleared it of imperial troops, Greifswald became the last imperial stronghold in Pomerania.

* 1122-Bernhard, later bishop of Lebus launches an unsuccessful mission in the Duchy of Pomerania

See also: Early history of Pomerania, Rugii, Rani ( Slavic tribe ), Principality of Rugia, Duchy of Pomerania, Swedish Pomerania, Province of Pomerania, Mecklenburg-Vorpommern

In 1325 Rügen was inherited by the Duchy of Pomerania.

The adoption of Lutheranism in the Duchy of Pomerania in 1534 distinguished the Slovincians from the Kashubes in Pomerelia, who remained Roman Catholic.

The Carthusian monks had the nearby woodlands cleared out, and peasants from the neighbouring Duchy of Pomerania were encouraged to settle and farm in the newly cleared areas.

Normandy (, pronounced, Norman: Nourmaundie, from Old French Normanz, plural of Normand, originally from the word for " northman " in several Scandinavian languages ) is a geographical region corresponding to the former Duchy of Normandy.

Saint Casimir Jagiellon (, ) ( October 3, 1458 – March 4, 1484 ) was a royal prince of the Kingdom of Poland and of the Grand Duchy of Lithuania who became a patron saint of Lithuania, Poland, and the young.

The Duchy of Upper Lorraine (, ; ) was an historical duchy roughly corresponding with the present-day northeastern Lorraine region of France, including parts of modern Luxembourg and Germany.

On November 13, 1945 the British general Colin Muir Barber and the Soviet general major Nikolay Grigoryevich Lyashchenko () signed the Barber Lyashchenko Agreement (, also Gadebusch Agreement ) in Gadebusch, redeploying some municipalities of the Duchy of Lauenburg District and neighbouring Mecklenburg, then part of the Soviet Zone of Occupation.

* Charles Farnese (,, ; 27 August 1545September 1545 ), heir to the Duchy of Parma.

The Glory of the Duchy of Carniola (, ) is Johann Weikhard von Valvasor's most important work on history and natural history of his homeland Carniola, a central part of present-day Slovenia and Istria in Croatia.

Centered around the historical capital of the Grand Duchy of Lithuania, Vilna (, ), for eighteen months the entity served as a buffer state between Poland, upon which it depended, and Lithuania, which claimed the area.

The Prussian administrative unit that covered the territory of the Duchy was called the Province of the Grand Duchy of Posen in the years 1815 – 1849, and later to simplify just the Province of Posen (, ).

Between 1815 and 1831 he acted as Duke-Governor (, ) of the Grand Duchy of Posen, an autonomous province of the Kingdom of Prussia created out of Greater Polish lands annexed in the Partitions of Poland.

William III ( 915 – 3 April 963 ), called Towhead (, ) from the colour of his hair, was the " Count of the Duchy of Aquitaine " from 959 and Duke of Aquitaine from 962 to his death.

The Duchy of Aquitaine (,, ) ruled the historical region of Aquitaine ( not to be confused with modern-day Aquitaine ) under the supremacy of Frankish, English, and later French kings.

For the guberniya (,,, ) as subdivisions of the Kingdom of Poland (" Russian Poland ") and the Grand Duchy of Finland (" Russian Finland "); see Administrative division of Congress Poland and Governorates of the Grand Duchy of Finland.

* Charles Farnese (,, ; 27 August 1545September 1545 ), heir to the Duchy of Parma.

The Duchy of the Archipelago (, ) or also Duchy of Naxos (, ) or Duchy of the Aegean (, ) was a maritime state created by Venetian interests in the Cyclades archipelago in the Aegean Sea, in the aftermath of the Fourth Crusade, centered on the islands of Naxos and Paros.

The Duchy of Courland and Semigallia (,,, ) is the name of a duchy in the Baltic region that existed from 1562 to 1569 as a vassal state of the Grand Duchy of Lithuania and from 1569

Knighthood in the Middle Ages was closely linked with horsemanship ( and especially the joust ) from its origins in the 12th century until its final flowering as a fashion among the high nobility in the Duchy of Burgundy in the 15th century.

In the 12th century, Mecklenburg and Vorpommern were conquered by Henry the Lion and incorporated into the Duchy of Saxony, joining the Holy Roman Empire in the 1180s.

The invasion, facilitated by the beginning breakup of Kievan Rus ' in the 12th century, had incalculable ramifications for the history of Eastern Europe, including the division of the East Slavic people into three separate nations ( modern day Russia, Ukraine, and Belarus ) and the rise of the Grand Duchy of Moscow.

In the 12th and 13th century, Guelders quickly expanded downstream along the sides of the Maas, Rhine, and IJssel rivers and even claimed the succession in the Duchy of Limburg, until it lost the 1288 Battle of Worringen against Berg and Brabant.

Victor Emmanuel II, by the Grace of God and the Will of the Nation, King of Italy, King of Sardinia, Cyprus, Jerusalem, Armenia, Duke of Savoy, Count of Maurienne, Marquis ( of the Holy Roman Empire ) in Italy ; Prince of Piedmont, Carignano, Oneglia, Poirino, Trino ; Prince and Perpetual vicar of the Holy Roman Empire ; Prince of Carmagnola, Montmellian with Arbin and Francin, Prince bailliff of the Duchy of Aosta, Prince of Chieri, Dronero, Crescentino, Riva di Chieri e Banna, Busca, Bene, Brà, Duke of Genoa, Monferrat, Aosta, Duke of Chablais, Genevois, Duke of Piacenza, Marquis of Saluzzo ( Saluces ), Ivrea, Susa, del Maro, Oristano, Cesana, Savona, Tarantasia, Borgomanero e Cureggio, Caselle, Rivoli, Pianezza, Govone, Salussola, Racconigi con Tegerone, Migliabruna e Motturone, Cavallermaggiore, Marene, Modane e Lanslebourg, Livorno Ferraris, Santhià Agliè, Centallo e Demonte, Desana, Ghemme, Vigone, Count of Barge, Villafranca, Ginevra, Nizza, Tenda, Romont, Asti, Alessandria, del Goceano, Novara, Tortona, Bobbio, Soissons, Sant ' Antioco, Pollenzo, Roccabruna, Tricerro, Bairo, Ozegna, delle Apertole, Baron of Vaud e del Faucigni, Lord of Vercelli, Pinerolo, della Lomellina, della Valle Sesia, del marchesato di Ceva, Overlord of Monaco, Roccabruna and 11 / 12th of Menton, Noble patrician of Venice, patrician of Ferrara.

** James Stanley, Lord Strange ( 1716 – 1771 ), Chancellor of the Duchy of Lancaster, son of 11th Earl and father of 12th Earl.

The town was incorporated into the Duchy of Lower Lotharingia, which became part of the Duchy of Brabant at the end of the 12th century.

In the early 12th century, the town was part of the realm of Wartislaw I, Duke of Pomerania, which evolved into the Duchy of Pomerania.

By the end of the 12th century, the capital of Duchy was burnt several times by the armies of Suzdal.

With the construction of the Löwenburg, in the second half of the 12th century the area fell in their territory and the growing villages were between 1484 and 1815 part of the Office of Löwenburg, which belonged to the Duchy of Berg.

In the 12th century, Poland, the Holy Roman Empire's Duchy of Saxony and Denmark conquered Pomerania, ending the tribal era.

From the late 12th century, the Griffin Duchy of Pomerania stayed with the Holy Roman Empire and the Principality of Rugia with Denmark, while Denmark, Brandenburg, Poland and the Teutonic Knights struggled for control in Samboride Pomerelia.

In 1096 Duke Bretislaus II of Bohemia captured and devastated the fortress, nevertheless by the mid 12th century, Bardo again was part of the Polish Duchy of Silesia.

They ruled the area from the 12th century as a margraviate of the Holy Roman Empire until its elevation to the Grand Duchy of Baden in 1806, following the Empire's dissolution.

The Duchy of Styria, which existed as a distinct political-administrative entity from the 12th century to 1918, used to be divided into three traditional regions: the northern two-thirds of the former duchy, known historically as Upper and Central Styria, have been German-speaking and today form the Austrian State of Styria ().

In 12th and 13th centuries, some lands of Tivertsi were part of kingdom of Galicia and later the Grand Duchy of Lithuania.

Centred around the city of Minsk and subordinate to the Grand Duchy of Lithuania, the region continued the traditions-and shared the borders-of several previously existing units of administrative division, notably a separate Duchy of Minsk, annexed by Lithuania in the 12th century.

Raided on a yearly basis by Lithuanian tribes, by 12th century it was made a fief and in 14th century it was directly incorporated into the Grand Duchy.

It used to be part of the Duchy of Bavaria until the 12th century.

Originally in the eastern portion of the Duchy of Bavaria, the town has belonged to Duchy of Austria since the 12th century.