Here are a list of Guests
The Prince and Princess of Wales, the groom's parents
Princess Victoria of Wales, the groom's sister
Princess Maud of Wales, the groom's sister
The Queen of the United Kingdom, the groom's paternal grandmother
The Duke and Duchess of Edinburgh, the groom's paternal uncle and aunt
Princess Victoria Melita of Edinburgh, the groom's first cousin
Princess Alexandra of Edinburgh, the groom's first cousin
Princess Beatrice of Edinburgh, the groom's first cousin
The Duke and Duchess of Connaught and Strathearn, the groom's paternal uncle and aunt
Prince Arthur of Connaught, the groom's first cousin
Princess Margaret of Connaught, the groom's first cousin
Princess Patricia of Connaught, the groom's first cousin
The Empress Frederick, Queen Mother of Prussia's family:
Prince and Princess Henry of Prussia, the groom's first cousins
Grand Duchess Alice of Hesse and by Rhine's family:
Princess and Prince Louis of Battenberg, the groom's first cousin and her husband
Princess Alice of Battenberg, the groom's first cousin once removed
Princess and Prince Christian of Schleswig-Holstein, the groom's paternal aunt and uncle
Prince Albert of Schleswig-Holstein, the groom's first cousin
Princess Helena Victoria of Schleswig-Holstein, the groom's first cousin
Princess Louise, Marchioness of Lorne and Marquess of Lorne, the groom's paternal aunt and uncle
Princess and Prince Henry of Battenberg, the groom's paternal aunt and uncle
Prince Alexander of Battenberg, the groom's first cousin
Princess Victoria Eugenie of Battenberg, the groom's first cousin
The King and Queen of Denmark, the groom's maternal grandparents
Prince Valdemar of Denmark, the groom's maternal uncle
The Empress of All the Russias' family:
The Tsarevich of Russia, the groom's first cousin
Prince Albert of Belgium, the groom's paternal second cousin, once removed
Prince Victor of Hohenlohe-Langenburg, the groom's first cousin once removed
Countess Feodora Gleichen, the groom's second cousin
Countess Helena Gleichen, the groom's second cousin
Countess Victoria Gleichen, the groom's second cousin
The bride's family[edit]
The Duke and Duchess of Teck, the bride's parents
Prince Adolphus of Teck, the bride's brother
Prince Francis of Teck, the bride's brother
Prince Alexander of Teck, the bride's brother
The Duke of Cambridge, the bride's maternal uncle
Augustus FitzGeorge, the bride's cousin
The Grand Duchess and the Grand Duke of Mecklenburg-Strelitz, the bride's maternal aunt and uncle
Princess Claudine of Teck, the bride's paternal aunt
Princess Amelie, Baroness Carl von Hügel and Baron Carl von Hügel, the bride's paternal aunt and uncle
Baron Paul-Julius and Baroness Anna Pauline von Hügel, the bride's first cousin and his wife
Other foreign royalty
HH the Maharaja of Bhavnagar
HH the Raja of Kapurthala
HH the Thakur Sahib of Morbi
HH the Thakur Sahib of Gondal
You can read more here
https://en.wikipedia.org/wiki/Weddin...of_Teck#Guests