Why is Archie not a prince and how are royal titles given?

In Meghan Markle and Prince Harry’s explosive interview with Oprah Winfrey, which aired in the UK on Monday night, the Duke and Duchess of Sussex discussed how there were conversations at the palace about the title for their unborn child.

Meghan told Oprah: “They were saying they didn’t want him to be a prince or princess, not knowing what the gender would be, which would be different from protocol.”

She went on to cite the “George V or George VI convention” which states that when the Prince of Wales, Charles, becomes king, Archie and his soon-to-arrive younger sister would automatically become prince and princess as grandchildren of the monarch.

Meghan alleged that the royal family planned to change this protocol so her son would never become a prince.

“They want to change the convention for Archie” she said, pointing out that it would be “the first member of colour in this family, not being titled in the same way that other grandchildren would be…it’s not their right to take it away.”

But what is the rule at the palace for titles?

What is the exact royal protocol in place?

Harry and his brother William have been princes since birth, as have their cousins – Eugenie and Beatrice – as sons of Andrew.

Prince William’s children, George,…