Duke of Teck
In 1900, Prince Francis, Duke of Teck died, and Adolphus succeeded him as 2nd Duke of Teck. Margaret was now styled "Her Serene Highness the Duchess of Teck". The Dukedom of Teck was a title in the Kingdom of Württemberg. In 1911, King George V awarded the Duke of Teck the style "Highness" as a gift on his coronation. From then on Margaret was known as "Her Highness The Duchess of Teck".