On 15 October 1913, Princess Alexandra married her first cousin, once removed, Prince Arthur of Connaught at the Chapel Royal, St. James's Palace, London.

The bride's attendants were: 
Princess Maud, the bride's sister.

Princess Mary of the United Kingdom, the bride's maternal first cousin and daughter of King George V.
Princess Mary of Teck and Princess Helena of Teck, daughters of Prince Adolphus, Duke of Teck (brother of Queen Mary).

Princess May of Teck, the bride's maternal second cousin and daughter of Prince Alexander of Teck (brother of Queen Mary) and Princess Alice of Albany.

Prince Arthur of Connaught was the only son of the Duke of Connaught and Strathearn, third son of Queen Victoria and thus a younger brother of her maternal grandfather, King Edward VII.
As such, Arthur and Alexandra were first cousins once removed.

After their marriage, Alexandra was referred to as HRH Princess Arthur of Connaught, in accordance with the tradition that a wife normally shares the title and style of her husband.

With her husband, Alexandra also carried out royal engagements on behalf of her uncle, King George V, and later for her cousin, King George VI.
She also served as a Counsellor of State between 1937 and 1944.
On 15 October 1913, Princess Alexandra married her first cousin, once removed, Prince Arthur of Connaught at the Chapel Royal, St. James's Palace, London.
The bride's attendants were: 
Princess Maud, the bride's sister.
Princess Mary of the United Kingdom, the bride's maternal first cousin and daughter of King George V.
Princess Mary of Teck and Princess Helena of Teck, daughters of Prince Adolphus, Duke of Teck (brother of Queen Mary).
Princess May of Teck, the bride's maternal second cousin and daughter of Prince Alexander of Teck (brother of Queen Mary) and Princess Alice of Albany.
Prince Arthur of Connaught was the only son of the Duke of Connaught and Strathearn, third son of Queen Victoria and thus a younger brother of her maternal grandfather, King Edward VII. As such, Arthur and Alexandra were first cousins once removed.
After their marriage, Alexandra was referred to as HRH Princess Arthur of Connaught, in accordance with the tradition that a wife normally shares the title and style of her husband.
With her husband, Alexandra also carried out royal engagements on behalf of her uncle, King George V, and later for her cousin, King George VI. She also served as a Counsellor of State between 1937 and 1944.
Princess Alexandra, 2nd Duchess of Fife