The wedding will take place in Spring 2018. Further details about the wedding day will be announced in due course.
His Royal Highness and Ms Markle became engaged in London earlier this month.
Prince Harry has informed Her Majesty The Queen and other close members of his family.
Prince Harry has also sought and received the blessing of Ms Markle's parents.
The couple will live in Nottingham Cottage at Kensington Palace.
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