King Charles and Queen Camilla will be supported by the Duchess of Edinburgh at a major royal event next week. King Charles and Queen Camilla will be supported by the Duchess of Edinburgh at a major royal event next week. On Wednesday, King Charles, Queen Camilla and the Duchess of Edinburgh attended the premiere of the monarch's documentary Finding Harmony: A King's Vision. A spokesman for the King said the film was "not a conventional royal documentary". | PAA spokesman for the King said the film was "not a conventional royal documentary".