Gosiewski (Ślepowron)

The Gosiewskis had roots in Łomża Land,[1][2] and in the 15th–16th centuries owned properties in Mazovia and Podlachia.

[3] It seems the Gosiewski family (or Gąsiewski in old times), originates from a Knight from the Ślepowron heraldic clan, Lord of Gosie or Gosiewo, near Różan.

After they became also owner of a part of a village Mroczki-Kawki Many Gosiewskis still live in Chełsty and the surrounding area.

Two of the most representative members of the family were Aleksander Korwin Gosiewski, Palatine-Governor of Smolensk, Speaker of the Parliament and commander of the Polish garrison of the Moscow Kremlin.

His son Lithuanian Field Commander Wincenty Korwin Gosiewski was a supporter of a strong and centralized royal power, limiting Liberum veto and a variation about how the King should be elect call Vivente rege.