Diana, Princess of Wales

Diana was a Human female alive in the 20th century on planet Earth. She was the daughter-in-law of Queen Elizabeth II and part of the British monarchy, titled Diana, Princess of Wales. (, historical records)

In the late 20th century, Diana married Prince in a royal wedding. However, their marriage did not last, something that Captain Jean-Luc Picard reflected on during preparations for a Dragon Empire royal wedding in 2370. 

In London on Guy Fawkes' Night, 1992, Roberta Lincoln was attacked by an Augment wearing a Prince Charles plastic mask. She repelled his attack by letting off a Roman candle firework in his his face and quipped "That's for Princess Di!"