Johann Nepomuk was born on 24 March 1768 in
Prague, the ninth child of Count Franz Anton von
Nostitz-Rieneck (1725-1794) and Countess Marie Alžběta Krakovská z
Kolowrat (1728-1815). His father was the High
Burggraf of
Bohemia. His father's younger brother was
Friedrich Moritz von Nostitz-Rieneck, a high-ranking Austrian general who became president of the
Aulic Council shortly before his death in 1796. In 1784, he entered the
Habsburg monarchy's military establishment and fought in the
Austro-Turkish War. He served with distinction in the
Flanders Campaign and was wounded at
Tourcoing in 1794. He retired from the army at the end of 1796, but returned to military service as a
general officer in late 1800. In 1805, he led a brigade at
Dürrenstein,
Schöngrabern, and
Austerlitz. In 1809, he fought at
Aspern-Essling and led a cavalry division at
Wagram. In 1813, he served at
Dresden and led a division of
cuirassiers at
Leipzig. The following year, he fought at
Arcis-sur-Aube and
Fère-Champenoise. He became
Proprietor (Inhaber) of a light cavalry regiment from 1814 until his death in 1840. ==Family==