Count Jan Sebastian Szembek (1672-1731 Vice-Chancellor of the Crown in 1702, and Grand Chancellor of the Crown since 1712. He was also the starost of Łomża in 1706.

Marshal of the Sejm (') on December 22, 1701 - February 6, 1702.

Further reading

  • Listy Jana Jerzego Przebendowskiego podskarbiego wielkiego koronnego do Jana Szembeka podkanclerzego i kanclerza wielkiego koronnego z lat 1711-1728", ed. Adam Perłakowski, Kraków 2000.

References

thumb|left|200px|[[Szembek coat of arms ]]

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| width="25%" | Predecessor<br/>Jan Stanisław Jabłonowski

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| width="20%" | Great Chancellor of the Crown<br/>1712&ndash;1731

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| width="25%" | Successor<br/>Andrzej Stanisław Załuski

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| width="25%" | Predecessor<br/>Stanisław Antoni Szczuka

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| width="20%" | Sejm Marshal<br/>1701&ndash;1702

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| width="25%" | Successor<br/>Michał Serwacy Wiśniowiecki

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