Friedrich Eugen, Duke of Württemberg (21 January 1732 – 23 December 1797) was the fourth son of Karl Alexander, Duke of Württemberg, and Princess Maria Augusta of Thurn and Taxis (11 August 1706 – 1 February 1756). He was born in Stuttgart. From 1795 until 1797 he was Duke of Württemberg.
Duke Ulrich of Württemberg (13 June 1877-13 June 1944) Ducal branch of the royal dynasty. Philip of Württemberg belonged to the fifth branch (called the "Ducal branch") of the House of Württemberg, descended from the seventh son of Frederick II Eugene, Duke of Württemberg.
Württemberg, former German state, successively a countship, a duchy, a kingdom, and a republic before its partition after World War II. Its territory approximated the central and eastern areas of present-day Baden-Württemberg (q.v.) Land (state), of Germany.