The first seal, on basis of detailed research, was assigned to Władysław I Herman. M. Andrałojć, W. Andrałojć: Nie śniło się historykom (in Polish). [retrieved 26 July 2014]; F. Piekosiński: Najdawniejszy dokument polski, Wiadomości Numizmatyczno-Archeologiczne, vol. IV, 1899–1902. p. 493.
The Bulla is the seal of the highest rank. Originally from ancient Rome, in the Middle Ages was commonly used in offices and in the zones with Byzantine cultural influence, including the Principalities of Kievan Rus': the oldest preserved Bulla from this area are dated already from the second half of the 10th century, including the Bulla of Duke Sviatoslav. M. Andrałojć, W. Andrałojć: Nie śniło się historykom (in Polish) [retrieved 26 July 2014].
It is possible that there was no actual marriage -The Annalista Saxo uses the phrase "was married to" (in Latin desponsata fuit in the sentence: Huic desponsata fuit filia ducis Polanorum); GH Pertz: Annalista Saxon in Chronica et annales Aevi Salici (Monumenta Historica Germaniae)Archived 25 September 2017 at the Wayback Machine (in Latin), vol. VI. p. 768. [retrieved 19 May 2014].
Issues about the principate-seniority rules after Bolesław's death were further revised in the publication of A. Śmiecha, Testament Bolesława Krzywoustego. In Statut o sukcesji władzy w Polsce the author presents the views of Polish medieval studies. A. Śmiech: Testament Bolesława Krzywoustego (in Polish) [retrieved 22 July 2014]. See also [in:] S. Szczur: Historia Polski – średniowiecze, p. 128.
Modern medievalist historians pointed that Sieradz and Łęczyca were not included in the territorial district of the Seniorate Province. A. Śmiech: Testament Bolesława Krzywoustego (in Polish) [retrieved 22 July 2014].
According to modern medievalist historians, Henry would receive his domains only in 1146. A. Śmiech: Testament Bolesława Krzywoustego (in Polish) [retrieved 22 July 2014]. G. Labuda believed that Bolesław divided the country between three and not four sons: Władysław II, Bolesław IV and Mieszko III. G. Labuda: Testament Bolesława Krzywoustego [in:] A. Horst (ed.), Opuscula Casimiro Tymieniecki septuagenario dedicata, p. 193.
mediewistyka.net
O. Balzer's genealogy doesn't mention the coronation of Vratislav II, but he places the traditional date given by the chronicles of Cosmas of Prague (15 June 1086) to the coronation of the first King of Bohemia; O. Balzer: Genealogia Piastów, p. 108. V. Novotny indicates that the Synod of Mainz took place in late April or May 1085; V. Novotny: Ceske dejiny. Diiu I cast 2. Od Bretislava I do Premysla I, Prague 1912, p. 245. He believes that Vratislav II's coronation as King of Bohemia and Poland took place on 15 June 1085, after the synod, and not in 1086, as reported by O. Balzer and Cosmas of Prague. Compare to W. Mischke: Poland Czech kings crownArchived 8 August 2008 at the Wayback Machine (in Polish) [available 24 August 2009], pp. 11–12, 27–29.
Cosmas of Prague affirmation about the coronation of Prince Vratislav II as King of Poland is disputed by many historians. Medievalists consider it a mistake of the chronicler; G. Labuda: Korona i infuła. Od monarchii do poliarchii, Kraków: 1996, p. 13. ISBN83-03-03659-9. A detailed argument over the supposed coronation of Vratislav II was presented by W. Mischke: Poland Czech kings crownArchived 8 August 2008 at the Wayback Machine (in Polish) [available 24 August 2009], pp. 11–29. M. Spórna and P. Wierzbicki believe that message of Cosmas is authentic. As King of Poland, Vratislav II stemmed from the emperor's claim to sovereignty over the Polish homage (fief indirect, second-degree); M. Spórna, P. Wierzbicki: Słownik władców Polski i pretendentów do tronu polskiego, p.496.
According to the researchers there was a pathological malformation, called Mandibular Condylar Hyperplasia. M. Spórna, P. Wierzbicki: Słownik władców Polski i pretendentów do tronu polskiego, p. 66.
In older literature, there was a view that classified this bracteate with the name of penitential. W. Garbaczewski: Polskie monety kruszcowe od X wieku, p. 6Archived 23 August 2013 at the Wayback Machine (in Polish) [retrieved 26 July 2014]; M. Gumowski: Podręcznik numizmatyki polskiej, p. 25.
The poisoning of Miesko Bolesławowic is attributed to Sieciech. M. Spórna, P. Wierzbicki: Słownik władców Polski i pretendentów do tronu polskiego, p. 353; Ł. Piernikarczyk: Palatyn Sieciech (1080–1100) (in Polish) [retrieved 13 July 2014].
From 1686 to 1939 the day of King Stephen of Hungary was celebrated on 2 Septemberafter which was transferred on 16 August. Official website of the Parish of St. Stephen in Warsaw: Święty Stefan, Król, 969–1038 (in Polish) [retrieved 13 July 2014].
K. Maleczyński: Bolesław III Krzywousty, p. 302. The abolition of the Seniorate Principle occurred during the Congress of Łęczyca in 1180. In that meeting, the Lesser Poland domains were given to Casimir II as hereditary fief. R. Grodecki, S. Zachorowski, J. Dąbrowski: Dzieje Polski średniowiecznej, vol. I, p. 183. The decisions of the Congress were further approved by Pope Alexander III on 28 March 1181. A. Bielowski (ed.): Monumenta Poloniae Historica (in Polish), p. 401, compare editor 1, p. 401.
wbc.poznan.pl
Ph. Jaffé: Regesta pontificum Romanorum ab condita Ecclesia ad annum post Christum natum MCXCVIII, cap. I, p. 860, nr 7629. Text of the Bull Sacrosancta Romana was published [in:] Codex diplomaticus majoris Polonia, vol. 1, nr 6 (in Latin) [retrieved 19 July 2014].
web.archive.org
O. Balzer's genealogy doesn't mention the coronation of Vratislav II, but he places the traditional date given by the chronicles of Cosmas of Prague (15 June 1086) to the coronation of the first King of Bohemia; O. Balzer: Genealogia Piastów, p. 108. V. Novotny indicates that the Synod of Mainz took place in late April or May 1085; V. Novotny: Ceske dejiny. Diiu I cast 2. Od Bretislava I do Premysla I, Prague 1912, p. 245. He believes that Vratislav II's coronation as King of Bohemia and Poland took place on 15 June 1085, after the synod, and not in 1086, as reported by O. Balzer and Cosmas of Prague. Compare to W. Mischke: Poland Czech kings crownArchived 8 August 2008 at the Wayback Machine (in Polish) [available 24 August 2009], pp. 11–12, 27–29.
Cosmas of Prague affirmation about the coronation of Prince Vratislav II as King of Poland is disputed by many historians. Medievalists consider it a mistake of the chronicler; G. Labuda: Korona i infuła. Od monarchii do poliarchii, Kraków: 1996, p. 13. ISBN83-03-03659-9. A detailed argument over the supposed coronation of Vratislav II was presented by W. Mischke: Poland Czech kings crownArchived 8 August 2008 at the Wayback Machine (in Polish) [available 24 August 2009], pp. 11–29. M. Spórna and P. Wierzbicki believe that message of Cosmas is authentic. As King of Poland, Vratislav II stemmed from the emperor's claim to sovereignty over the Polish homage (fief indirect, second-degree); M. Spórna, P. Wierzbicki: Słownik władców Polski i pretendentów do tronu polskiego, p.496.
It is possible that there was no actual marriage -The Annalista Saxo uses the phrase "was married to" (in Latin desponsata fuit in the sentence: Huic desponsata fuit filia ducis Polanorum); GH Pertz: Annalista Saxon in Chronica et annales Aevi Salici (Monumenta Historica Germaniae)Archived 25 September 2017 at the Wayback Machine (in Latin), vol. VI. p. 768. [retrieved 19 May 2014].
In older literature, there was a view that classified this bracteate with the name of penitential. W. Garbaczewski: Polskie monety kruszcowe od X wieku, p. 6Archived 23 August 2013 at the Wayback Machine (in Polish) [retrieved 26 July 2014]; M. Gumowski: Podręcznik numizmatyki polskiej, p. 25.
