Hungarian nobleman and soldier. Became a hussar (1744). Served Maria Theresa in the War of the Austrian Succession. Served in the Prussian service during the Seven Years’ War until his resignation in 1761. Visited Poland. Returned to Austria, where he was tried for treason and acquitted. Settled in Hungary.

Traveled to Bordeaux by way of Leipzig (1776). Hoping to serve the American cause, he sailed aboard the Catharina of Dartmouth (February 1777). Congress accepted his services (May 1777) and appointed him a colonel in Pulaski’s Legion (April 1778). Helped to organize and train the cavalry. Killed in action (May 11, 1779).