[1] Robert was the fourth child of Duke Philipp of Württemberg and his wife Archduchess Maria Theresa of Austria.

[1] Robert married Archduchess Maria Immakulata of Austria, seventh child and fifth eldest daughter of Archduke Karl Salvator of Austria and his wife Princess Maria Immaculata of Bourbon-Two Sicilies, on 29 October 1900 in Vienna.

[1] Robert served as a cavalry officer in the Württemberg contingent of the Prussian Army.

[3] During World War I, he led his brigade as part of the 7th Cavalry Division.

[5] Principality of Lippe: House Order of the Honor Cross, 1st Class[10]