Karl August Friedrich, Hereditary Prince of Zweibrücken

Karl August Friedrich, Hereditary Prince of Zweibrücken (2 March 1776 - 21 August 1784) was the only son and heir of Charles II August, Duke o Zweibrücken and his wife Princess Maria Amalie of Saxony. He died aged 8 after having suffered severe Febrile seizures. His mother was a daughter of Friedrich Christian, Elector of Saxony an sister of the future Friedrich August I of Saxony as well as Anton of Saxony