He lost the two days' battle of Kossovo (October 17th-19th) owing to the treachery of Dan, hospodar of Wallachia, and of his old enemy Brankovic, who imprisoned him for a time in the dungeons of the fortress of Semendria; but he was ransomed by the Magyars, and, after composing his differences with his powerful and jealous enemies in Hungary, led a punitive expedition against the Servian prince, who was compelled to accept most humiliating terms of peace.
In 1595 Zamoyski, in his capacity of commanderin-chief, at the head of S000 veterans dethroned the anti-Polish hospodar of Moldavia and installed in his stead a Catholic convert, George Mohila.
Five years later (October 20, 1600) he won his greatest victory at Tergoviste, when with a small well-disciplined army he routed Michael the Brave, hospodar of Walachia and Moldavia.
Insect life is somewhat less remarkable; but besides a distinctive genus of Orthoptera (Jaquetia Hospodar), there are several kinds of weevils (Curculionidae) said to be peculiar to Rumania.
The office of voivode or hospodar was sold to the highest bidder at Stambul, to be farmed out from a purely mercenary point of view.