”HRH The Duke of Edinburgh” (på engelska). The Titles of HRH The Prince Philip, Duke of Edinburgh. College of Arms. 9 april 2021. https://www.college-of-arms.gov.uk/news-grants/news/item/187-hrh-the-duke-of-edinburgh. Läst 7 maj 2021. ”These peerages are hereditary and on the death of His Royal Highness have passed to his eldest son, HRH The Prince of Wales. In the event of the Prince of Wales or any subsequent holder of these titles succeeding to the Crown, these titles and all others held will merge with the Crown.”