Dobiesław of Oleśnica

According to Cronica conflictus, Dobiesław of Oleśnica thrust a lance through the Grand Master's neck,[2] while Jan Długosz presented Mszczuj of Skrzynno as the killer.

With the death of the Grand Master, the Teutonic Knights and Prussian army fell into disarray and were defeated by the Polish/Lithuanian forces, thus securing Polish supremacy in central Europe.

Among 50 Polish units in the battle of Grunwald, Długosz lists Oleśnicki's squadron as the 38th,[3][4] and his banner as a white cross on a red field.

In a tournament organized by the Grand Master, Oleśnicki conquered all challenges by successively dropping from the saddles all previous winners of the fights.

[6] As a trusted advisor to the King he was a signatory to the Act of Union of Horodło of 1413[7] and he signed the peace in Brest Kujawski,[8] on 31 December 1435.