Frederick, Duke of Württemberg-Neuenstadt

Frederick of Württemberg-Neuenstadt (Stuttgart, 19 December 1615 – 24 March 1682 in Neuenstadt am Kocher) was Duke of Württemberg and founder of the second branch line Duchy of Württemberg-Neuenstadt.
Life
Frederick was the third son of Johann Frederick, the 7th Duke of Württemberg and Barbara Sophie of Brandenburg. When his father died in 1628, his elder brother became Eberhard III, Duke of Württemberg.
Frederick went at the age of 13 to study in Tübingen. In 1630 he went on a Grand Tour via Strasbourg, Basel and Montpellier but broke it off in Lyon due to severe fever.
In 1638, his brother Eberhard III was given back certain parts of the lost duchy of Württemberg by Ferdinand III, Holy Roman Emperor while Frederick was drawn into war service. After the Peace of Westphalia, which led to the full restoration of Württemberg, Eberhard entered into a Fürstbrüderlicher Vergleich - a mutual agreement made between ducal brothers. Duke Eberhard...