Maksymilian Guldenstern (; ; died 1678), also known as Maksymilian Gyllenstierna (; ), was a nobleman and politician who served as the castellan of Elbląg in the Polish–Lithuanian Commonwealth from 1667 to 1678. With said office, he was also a secular senator of the Polish–Lithuanian Commonwealth, as one of the representatives of Malbork Voivodeship. In 1669, as a senator, he was a member of the election sejm of 1669, during which he voted for king Michał Korybut Wiśniowiecki.

Biography Maksymilian Guldenstern was the son of Johan Nilsson Gyllenstierna, an aristocrat from Sweden, who was an admiral in the Polish–Lithuanian Commonwealth Navy.Stefan Ciara: Senatorowie i dygnitarze koronni w drugiej połowie XVII wieku. Wrocław–Warsaw–Kraków: Polskie Towarzystwo Historyczne, Zakład Narodowy im. Ossolińskich, Wydawnictwo PAN, 1990, p. 15. (in Polish) His paternal grandfather, Nils Göransson Gyllenstierna, served as the Lord High Chancellor of Sweden from 1561 to 1590, and as the Lord High Chancellor of Sweden from 1590 to 1601. Maksymilian Guldenstern belonged to the heraldic clan of Gyllenstierna.Wojciech Łygaś: Gdańsk: szwedzkie karty historii. Gdańsk: Marpress, 2001, p. 130. ISBN 83-87291-75-7. (in Polish)

Guldenstern served as the castellan of Elbląg in the Polish–Lithuanian Commonwealth from 1667 to 1678. With said office, he was also a secular senator of the Polish–Lithuanian Commonwealth, as one of the representatives of Malbork Voivodeship. In 1669, as a senator, he was a member of the election sejm of 1669, during which he voted for king Michał Korybut Wiśniowiecki. He died in 1678.Leszek Andrzej Wierzbicki: Senatorowie koronni na sejmach Rzeczypospolitej. Warsaw: 2017, p. 71. (in Polish)Krzysztof Mikulski: Urzędnicy Prus Królewskich XV-XVIII wieku. Spisy. Wrocław, 1990, p. 208. (in Polish)

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