Bernard Szumborski (German: Bernhard von Zinnenberg) was a Moravian knight and a mercenary.
King Casimir IV of Poland sent cavalry attacks to the rear of the Teutonic lines and Szumborski was captured.
Szumborski managed to escape and organized the pursuit of the fleeing Polish army.
On October 24, 1457, together with 2000 mercenaries, Szumborski captured Chełmno (Kulm), and killed its mayor, Michal Segemund, claiming that he was a traitor.
On September 19, 1460, Szumborski captured the town of Golub-Dobrzyń, but Polish garrison of its castle, commanded by Andrzej Puszkarz, managed to hold it.