Prince Harry, Duke of Sussex - Prince Harry of Wales?

Since Prince Harry, Duke of Sussex, is my 8th blood cousin 4 times removed on my father's, Louis McClanahan, family side, I would have no objection.

Currently when I am discussing Prince Harry, I will address his name as Prince Harry, Prince Harry, Duke of Sussex, and/or HRH Prince Henry Charles Albert David of Wales, Duke of Sussex..

Jari Hamalainen, in reference to a Geni family genealogy path, you and I are 23rd blood cousins thrice removed.

Jari, you are my 23rd cousin once removed and Wayne you are my 19th cousin 3x removed. I would believe, according to Debretts - addressing a letter to the Prince would incorporate HRH Prince Henry, Duke of Sussex. KVCO

no. direct heirs to the throne do not have a surname

Why Queen Elizabeth and the Royal Family Don't Have Last Names

http://time.com/5219397/royal-family-queen-elizabeth-last-name/

Look at legal documents he signs, He can use a couple different surnames, The official surname, or as he does Wales, so it is William Wales and Henry Wales. Royals tended, and still do, use the House name as a surname. I forget but I think the official name is Mountbatten-Windsor.

Whatever. But currently there is HRH Prince Harry of Wales, Duke of Sussex and then HRH Prince William Mountbatten-Windsor, Duke of Cambridge. I don't see any justified reason for the variation between these two.

Harry is not the legal name of the Prince, it is Henry!