King George V of Britain and Mary of Teck on their wedding day. He was Queen Victoria's grandson, she was of the British royal family and her father was a German Duke. Parents of King Edward VIII and King George VI. Grandparents of Queen Elizabeth II.
King George V & Queen Mary (Mary of Teck). Merciful heavens, that hat!
Empress Alexandra Romanov dress
Queen Mary wearing the tiara - made in 1913/14 from diamonds taken from her County of Surrey tiara - that's become known as the Gloucester Palmette after being given to Princess Alice on her marriage to the Duke of Gloucester and now used by the current Duchess. The central element has three forms.