Reverendo in Christo Patri, domino Ioannes Dantiscus (Johannes von Höfen, Ioannes de Curiis, Jan Dantyszek, Johannes Flachsbinder) (*1485 – †1548), eminent diplomat and humanist in the service of the Jagiellons, neo-Latin poet; 1530-1537 Bishop of Kulm; 1537-1548 Bishop of Ermland⌊Ioanni episcopo VarmiensiIoannes Dantiscus (Johannes von Höfen, Ioannes de Curiis, Jan Dantyszek, Johannes Flachsbinder) (*1485 – †1548), eminent diplomat and humanist in the service of the Jagiellons, neo-Latin poet; 1530-1537 Bishop of Kulm; 1537-1548 Bishop of Ermland⌋, sincere nobis dilecto

Bona Sforza (*1494 – †1557), Queen of Poland and Grand Duchess of Lithuania (1518-1557); the second wife of Sigismund I Jagiellon; Duchess of Bari and Rossano; daughter of Gian Galeazzo Sforza of Milan and Isabella of Aragon⌊BonaBona Sforza (*1494 – †1557), Queen of Poland and Grand Duchess of Lithuania (1518-1557); the second wife of Sigismund I Jagiellon; Duchess of Bari and Rossano; daughter of Gian Galeazzo Sforza of Milan and Isabella of Aragon⌋ Dei gratia regina Poland (Kingdom of Poland, Polonia)⌊PoloniaePoland (Kingdom of Poland, Polonia)⌋, magna dux Lithuania⌊LituaniaeLithuania⌋, Rus (Russia)⌊RussiaeRus (Russia)⌋, Prussia, region in central Europe, bordered by Pomerania, Poland, Lithuania and Livonia. From 1466 Prussia was divided into Royal Prussia (Prussia Regalis), which was a part of the Kingdom of Poland, and Teutonic Prussia (Prussia Ordinis Theutonici) – covering the remnants of the former territory of the Teutonic Order’s state in Prussia. In 1525, the Order’s last Grand Master, Albrecht von Hohenzollern, converted to Lutheranism and became the first lay duke in former Teutonic Prussia (dux in Prussia), which from then on was called Ducal Prussia (Prussia Ducalis). At that time, as a result of the treaty of Cracow, Ducal Prussia became a fief of the kings of Poland⌊PrussiaePrussia, region in central Europe, bordered by Pomerania, Poland, Lithuania and Livonia. From 1466 Prussia was divided into Royal Prussia (Prussia Regalis), which was a part of the Kingdom of Poland, and Teutonic Prussia (Prussia Ordinis Theutonici) – covering the remnants of the former territory of the Teutonic Order’s state in Prussia. In 1525, the Order’s last Grand Master, Albrecht von Hohenzollern, converted to Lutheranism and became the first lay duke in former Teutonic Prussia (dux in Prussia), which from then on was called Ducal Prussia (Prussia Ducalis). At that time, as a result of the treaty of Cracow, Ducal Prussia became a fief of the kings of Poland⌋, Mazowsze (Masovia) historic region in Central Poland, before 1526 an autonomous duchy and feud of the Kingdom of Poland, from 1526 included in the Kingdom⌊MasoviaeMazowsze (Masovia) historic region in Central Poland, before 1526 an autonomous duchy and feud of the Kingdom of Poland, from 1526 included in the Kingdom⌋ etc. domina

Reverende in Christo Pater, sincere nobis dilecte.

Cognovimus ex litteris Vestrae Paternitatis et Stanisław Kostka (*1487 – †1555), as a leader of the so-called nobles' party active in Royal Prussia since 1536, Kostka stood in opposition to most of the members of the Council of Royal Prussia, who wanted to maintain the autonomy of the province and a "balance of power" in terms of governance. The tension between the Prussian Subtreasurer and the Council had been increasing since the Diet in Graudenz (Grudziądz) in 1533. Kostka, connected with the royal court since his youth, was sent to Graudenz as the King's deputy and, contrary to custom, decided to take part in the proceedings. In response to such a step, the Council members stopped the meeting. Kostka accused them of hostility towards the Poles and intervened on this matter at the court. In the absence of the then Bishop of Ermland (Mauritius Ferber) it was Dantiscus who chaired the Graudenz Diet. The incident badly harmed his future relationships with Kostka; 1531-1555 Treasurer of the Prussian lands and Treasurer of Marienburg (Malbork); 1544-1545 Castellan of Elbing (Elbląg), 1545-1546 Castellan of Kulm (Chełmno); 1546-1549 Vice-Voivode of Kulm; 1546-1551 Voivode of Pomerania; 1551-1555 Voivode of Kulm (PSB 14, p. 356; Urzędnicy 5/2, p. 216; MAŁŁEK 1976, p. 119-123)⌊Stanislai CostkaeStanisław Kostka (*1487 – †1555), as a leader of the so-called nobles' party active in Royal Prussia since 1536, Kostka stood in opposition to most of the members of the Council of Royal Prussia, who wanted to maintain the autonomy of the province and a "balance of power" in terms of governance. The tension between the Prussian Subtreasurer and the Council had been increasing since the Diet in Graudenz (Grudziądz) in 1533. Kostka, connected with the royal court since his youth, was sent to Graudenz as the King's deputy and, contrary to custom, decided to take part in the proceedings. In response to such a step, the Council members stopped the meeting. Kostka accused them of hostility towards the Poles and intervened on this matter at the court. In the absence of the then Bishop of Ermland (Mauritius Ferber) it was Dantiscus who chaired the Graudenz Diet. The incident badly harmed his future relationships with Kostka; 1531-1555 Treasurer of the Prussian lands and Treasurer of Marienburg (Malbork); 1544-1545 Castellan of Elbing (Elbląg), 1545-1546 Castellan of Kulm (Chełmno); 1546-1549 Vice-Voivode of Kulm; 1546-1551 Voivode of Pomerania; 1551-1555 Voivode of Kulm (PSB 14, p. 356; Urzędnicy 5/2, p. 216; MAŁŁEK 1976, p. 119-123)⌋ indignum et gravi animadversione dignum facinus Gdanensium adversus Sigismund I Jagiellon (Zygmunt I) (*1467 – †1548), King of Poland and Grand Duke of Lithuania (1506-1548); Duke of Głogów (Glogau) (1499-1506), Duke of Opava (1501-1506), Governor of Silesia (1504-1506); son of King Kazimierz IV Jagiellon and Elisabeth of Austria⌊regiam maiestatemSigismund I Jagiellon (Zygmunt I) (*1467 – †1548), King of Poland and Grand Duke of Lithuania (1506-1548); Duke of Głogów (Glogau) (1499-1506), Duke of Opava (1501-1506), Governor of Silesia (1504-1506); son of King Kazimierz IV Jagiellon and Elisabeth of Austria⌋, dominum eorum, commissum. Cognovimus etiam, quis sit auctor huius temeritatis. Sigismund I Jagiellon (Zygmunt I) (*1467 – †1548), King of Poland and Grand Duke of Lithuania (1506-1548); Duke of Głogów (Glogau) (1499-1506), Duke of Opava (1501-1506), Governor of Silesia (1504-1506); son of King Kazimierz IV Jagiellon and Elisabeth of Austria⌊Regia maiestasSigismund I Jagiellon (Zygmunt I) (*1467 – †1548), King of Poland and Grand Duke of Lithuania (1506-1548); Duke of Głogów (Glogau) (1499-1506), Duke of Opava (1501-1506), Governor of Silesia (1504-1506); son of King Kazimierz IV Jagiellon and Elisabeth of Austria⌋ in tanta rei magnitudine nonnihil fortasse est deliberatura et rem hanc ad consiliarios delatura. Reliqua Vestra Paternitas ex litteris Sigismund I Jagiellon (Zygmunt I) (*1467 – †1548), King of Poland and Grand Duke of Lithuania (1506-1548); Duke of Głogów (Glogau) (1499-1506), Duke of Opava (1501-1506), Governor of Silesia (1504-1506); son of King Kazimierz IV Jagiellon and Elisabeth of Austria⌊regiae maiestatisSigismund I Jagiellon (Zygmunt I) (*1467 – †1548), King of Poland and Grand Duke of Lithuania (1506-1548); Duke of Głogów (Glogau) (1499-1506), Duke of Opava (1501-1506), Governor of Silesia (1504-1506); son of King Kazimierz IV Jagiellon and Elisabeth of Austria⌋ cognoscet.

Ac salva et felix diu valeat.

Datae in Brest-Litovsk (Brześć nad Bugiem, Brześć Litewski), town in western part of Grand Duchy of Lithuania, today southwestern Belarus⌊BrzescieBrest-Litovsk (Brześć nad Bugiem, Brześć Litewski), town in western part of Grand Duchy of Lithuania, today southwestern Belarus⌋, die XI-a Octobris anno Domini MDXLIIII.