Castellan in the context of "Inowrocław Voivodeship"

The Union of Grodno established a real union between the Grand Duchy of Lithuania and the Duchy of Livonia on 25 December 1566, during the Livonian War. Livonia had submitted itself to Sigismund II Augustus by the Treaty of Vilnius (1561). Livonia's administrative division was re-organized with its castellans becoming members of the Lithuanian senate. The union did not impact Livonian jurisdiction, which was to be carried out according to its traditional customs.

Czersk (Polish pronunciation: [t͡ʂɛrsk] ) is a settlement in the administrative district of Gmina Góra Kalwaria, within Piaseczno County, Masovian Voivodeship, in east-central Poland. The village also lies on the Czersk Lake (size: 9 hectares), which is an oxbow lake of the Vistula.

Czersk was an important settlement in the past and is one of the oldest Mazovian cities, famous for ruins of a medieval castle constructed in the late 14th century. It was a royal town of the Crown of the Kingdom of Poland in the past. In 1247–1526, it was the capital of the Duchy of Czersk, one of medieval Polish duchies. After incorporation of Mazovia into Poland (1526), the duchy was turned into the Czersk Land (see ziemia), part of Masovian Voivodeship (1526–1795). The Land of Czersk was divided into four counties - those of Czersk, Grójec, Garwolin (since 1539), and Warka. Czersk itself was the seat of castellans, who also were senators of the Polish–Lithuanian Commonwealth.

Robert Fitzwalter (died 9 December 1235) was one of the leaders of the baronial opposition against King John, and one of the twenty-five sureties of Magna Carta. He was feudal baron of Little Dunmow, Essex and constable of Baynard's Castle, in London, to which was annexed the hereditary office of castellan and chief knight banneret of the City of London. Part of the official aristocracy created by Henry I and Henry II, he served John in the wars in Normandy, in which he was taken prisoner by King Philip II of France and forced to pay a heavy ransom.

Fitzwalter was implicated in the baronial conspiracy of 1212. According to his own statement the king had attempted to seduce his eldest daughter, but Robert's account of his grievances varied from time to time. The truth seems to be that he was irritated by the suspicion with which John regarded the new baronage. Fitzwalter escaped a trial by fleeing to France. He was outlawed, but returned under a special amnesty after John's reconciliation with the pope.

The Lithuanian nobility (Lithuanian: bajorija) or szlachta of the Grand Duchy of Lithuania (Lithuanian: Lietuvos Didžiosios Kunigaikštystės šlėkta, Polish: szlachta Wielkiego Księstwa Litewskiego) was historically a legally privileged hereditary elite class in the Grand Duchy of Lithuania and Polish Lithuanian Commonwealth (including during period of foreign rule 1795–1918) consisting of Lithuanians from Lithuania Proper; Samogitians from Duchy of Samogitia; following Lithuania's eastward expansion into what is now Belarus, Ukraine and Russia, many ethnically Ruthenian noble families (boyars); and, later on, predominantly Baltic German families from the Duchy of Livonia and Inflanty Voivodeship.

Initially, the privileged social group of the Grand Duchy of Lithuania was called boyars. Boyars became part of the szlachta (nobility) during the Union of Horodło on October 2, 1413, initiating nobility in the Grand Duchy of Lithuania following the Western European model (with a hereditary system of heraldic identification), as well as an increase in the position of the Greater Lithuanian nobility. The Grand Duchy of Lithuania adopted Polish institutions of castellans and voivodes, and 47 selected boyars of Grand Duchy of Lithuania of the Catholic faith were adopted by Polish noble families and received Polish coats of arms.

Prince Mikołaj Krzysztof Radziwiłł (Lithuanian: Mikalojus Kristupas Radvila; 2 August 1549 – 28 February 1616), nicknamed "the Orphan" (Polish: Sierotka, Lithuanian: Našlaitėlis), was a Polish–Lithuanian nobleman (szlachcic), Ordynat of Nyasvizh from 1586, Court Marshal of Lithuania from 1569, Grand Marshal of Lithuania from 1579, castellan of Trakai from 1586, voivode of Trakai Voivodeship from 1590, voivode of Vilnius Voivodeship from 1604 and governor of Šiauliai. After the treaty at Vienna in 1515 all Radziwills were Imperial Princes and he held a position as Imperial Prince of the Holy Roman Empire.
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Oświęcim is a town in the Lesser Poland Voivodeship in southern Poland, situated 33 kilometres (21 mi) southeast of Katowice, near the confluence of the Vistula (Wisła) and Soła rivers.

Oświęcim dates back to the 12th century, when it was an important castellan seat. From 1315 to 1457 it was the seat of a local line of the Piast dynasty, and from 1564 to 1772 it was a royal city of the Kingdom of Poland, with the Ducal and Royal Castle and several medieval Gothic churches among the city's landmarks. Located on the east-west trade route, it was an important hub for trade, especially in salt from Wieliczka. In the interwar period, Oświęcim was a garrison town for the Polish Army, and during the German occupation of Poland in World War II, the former barracks were expanded to host the infamous German Nazi Auschwitz concentration camp (also known as KL or KZ Auschwitz Birkenau), now the Auschwitz-Birkenau State Museum, a UNESCO World Heritage Site.

FitzGerald (Irish: Mac Gearailt) is a Hiberno-Norman noble and aristocratic dynasty, originally of Cambro-Norman and Anglo-Norman origin. They have been peers of Ireland since at least the 13th century, and are described in the Annals of the Four Masters as having become "more Irish than the Irish themselves" or Gaels, due to assimilation with the native Gaelic aristocratic and popular culture. The dynasty has also been referred to as the Geraldines and Ireland's largest landowners. They achieved power through colonisation and the conquest of large swathes of Irish territory by the sons and grandsons of Gerald de Windsor (c. 1075 – 1135). Gerald de Windsor (Gerald FitzWalter) was the first Castellan of Pembroke Castle in Wales, and became the male progenitor of the FitzMaurice and FitzGerald Dynasty ("fitz", from the Anglo-Norman fils indicating "sons of" Gerald). His father, Baron Walter FitzOther, was the first Constable and Governor of Windsor Castle for William the Conqueror, and was the Lord of 38 manors in England, making the FitzGeralds one of the "service families" on whom the King relied for his survival. Some of its members became the Black Knights, Green Knights and White Knights.

The Familia ("The Family", from Latin familia) was the name of an 18th-century Polish political faction led by the House of Czartoryski and allied families. It was formed towards the end of the reign of King of Poland Augustus II the Strong (reign. 1697–1706, 1709–1733). The Familia's principal leaders were Michał Fryderyk Czartoryski, Grand Chancellor of Lithuania, his brother August Aleksander Czartoryski, Voivode of Ruthenia (Rus), their sister Konstancja Czartoryska, and their brother-in-law (from 1720), Stanisław Poniatowski, Castellan of Kraków.