Duke of Teck of Teck the British style of "His Highness", on a non-hereditary basis. In 1893, Francis' daughter, Princess Victoria Mary of Teck married Prince George, Duke of York who later reigned as King George V. When the first Duke of Teck died in 1900, the dukedom passed to his eldest son, HSH Prince Adolphus of Teck. King George V granted the second Duke of Teck, his brother-in-law, the personal style of "His Highness" in 1911. The title existed until World War I, when anti-German sentiment in the United Kingdom prompted the British monarch to adopt a non-German surname and relinquish all
Mary of Teck January 1936, after his physician, Lord Dawson of Penn, gave him an injection of morphine and cocaine that may have hastened his death. Queen Mary's eldest son ascended the throne as Edward VIII. She was now the queen mother, though she did not use that style, and was instead known as "Her Majesty Queen Mary". Within the year, Edward caused a constitutional crisis by announcing his desire to marry his twice-divorced American mistress, Wallis Simpson. Mary disapproved of divorce, which was against the teaching of the Anglican church, and thought Simpson wholly unsuitable to be the wife of a king.