Arms of Von Würtemmberg

Lords of Stuttgart, Waiblingen, Riquewihr and Kirkel, Counts of Württemberg-Stuttgart and Montbéliard, Dukes of Württemberg and Teck Hereditary Bannerbearers of Holy Roman Empire, issued from Ulrich V, 2nd son of Eberhard IV, Count of Wurttemberg

I should have said current until 1981. This family married into the British royal family and exchanged their German titles for English ones. As far as I know the last male-line descendant of the first duke of Teck was his grandson George Cambridge, 2nd Marquess of Cambridge. He died in 1981 and the marquessate of Cambridge became extinct.