Rupert Cambridge, Viscount Trematon

Prince Rupert with his mother and sister, c. 1909

Prince Rupert was born on 24 August 1907 at Claremont House, England. His parents were Prince Alexander of Teck and the former Princess Alice of Albany, great-grandson and granddaughter of King George III and Queen Victoria respectively. Prince Rupert was a haemophiliac, a condition he shared with many descendants of Queen Victoria, including his maternal grandfather, Prince Leopold, Duke of Albany, who died because of it.[1] Rupert was educated at Trinity College, Cambridge.

During the First World War, anti-German feeling in the United Kingdom led Rupert's uncle King George V to renounce all Germanic titles for himself and his family. In response to this, Prince Alexander, Rupert's father, renounced his title of a prince of Teck in the Kingdom of Württemberg and the style His Serene Highness. Alexander, along with his brother, Prince Adolphus of Teck, adopted the name Cambridge, after their maternal grandfather, Prince Adolphus, Duke of Cambridge. A few days later, the King created his brother-in-law Earl of Athlone and Viscount Trematon. Alexander was now styled The Right Honourable The Earl of Athlone. Rupert adopted the courtesy title of Viscount Trematon. His mother retained her title of Princess of Great Britain and Ireland with the style Her Royal Highness and became known as Princess Alice, Countess of Athlone.

Viscount Trematon died on 15 April 1928 from an intracerebral hemorrhage as a result of a car crash in France. On 1 April 1928, Lord Trematon was driving with two friends on the road from Paris to Lyon. While overtaking another car, Trematon's car hit a tree and overturned. One of his friends died from injuries and Trematon was taken to nearby hospital at Belleville-sur-Saône with a slight fracture of the skull. He never recovered and died in hospital in the early hours of 15 April. His funeral took place in St George's Chapel, Windsor Castle, and was attended by King George V and Queen Mary. He was buried in the Royal Burial Ground, Frogmore, on 20 April 1928. His death, following the death of his baby brother Maurice in 1910, meant that the title of Earl of Athlone became extinct in 1957 when his father died.