The title existed until 1917, when during World War I, anti-German sentiment in the United Kingdom led the British monarch to relinquish all German titles on behalf of himself and his family members living in the British Empire.
The last male line descendant of Prince Francis, Duke of Teck was George Cambridge, 2nd Marquess of Cambridge, the son of Prince Adolphus, Duke of Teck who died in 1981, and no legal claim to the title now exists.