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Siemowit VI of Płock (pl: Siemowit VI płocki; 2 January 1446 - 31 December 1461/1 January 1462), was a Polish prince member of the House of Piast from the Masovian branch. He was a Duke of Płock, Rawa Mazowiecka, Belz, Płońsk, Zawkrze and Wizna during 1455-1461/62 (under regency until 1459) jointly with his brother, since 1459 ruler over ...
Siemowit VI of Płock (pl: Siemowit VI płocki; 2 January 1446 - 31 December 1461/1 January 1462), was a Polish prince member of the House of Piast from the Masovian branch. He was a Duke of Płock , Rawa Mazowiecka , Belz , Płońsk , Zawkrze and Wizna during 1455-1461/62 (under regency until 1459) jointly with his brother, since 1459 ruler ...
After the death of their father on 11/12 December 1455, Władysław II and his brother Siemowit VI inherited their domains; however, because at that moment they are minors, the regency was held by their mother and Paweł Giżycki, Bishop of Płock.
Siemowit VI of Płock (pl: Siemowit VI płocki; 2 January 1446 - 31 December 1461/1 January 1462), was a Polish prince member of the House of Piast from the Masovian branch. He was a Duke of Płock, Rawa Mazowiecka, Belz, Płońsk, Zawkrze and Wizna during 1455-1461/62 (under regency until 1459) jointly with his brother, since 1459 ruler over ...
Date of birth: 2 January 1446, 11 January 1446: Date of death: 1 January 1462, 10 January 1462: Manner of death
Siemowit VI and Władysław II were dukes of Płock, Wizna, Zawkrze, Sochaczew, Gostyń, and Bełz. Various claimants to their duchies emerged, among whom Catherine, daughter of Siemowit IV and widow of Mykolas Žygimantaitis, and Margaret, duchess of Oleśnica, pursued their claims energetically.
Siemowit VI (2 January 1446 - 31 December 1461/1 January 1462). Władysław II (aft. 31 October 1448 - 27 February 1462). Because his sons are minors at the time of his death, the regency was taken by their mother and Paweł Giżycki, Bishop of Płock.
