Original law dictated that Louis should have been known as a lord, but that ruling has since changed after the Queen sought legal action.
According to Hello! Magazine, the original-century old law decreed only the first grandson of Prince Charles would be granted an official ranking.
If that law was enforced, Louis and Charlotte would have to settle for lesser lord and lady titles, respectively.
The Queen’s legal action also ended male preference primogeniture – placing daughters below their brothers in the line of the succession.
The decision means Charlotte will not be superseded by her younger brother.
Prince Louis remains fifth in line for the throne.
Notably, Peter Phillips and Zara Tindall could have had the privilege of a Royal title.
Due to archaic legislation, The Queen’s daughter, Princess Anne – Zara and Peter’s mother – is not entitled to extend the priveledge to her children.
Her Majesty change this law, but Princess Anne refused the opportunity to give her children royal titles.
Mark Phillips, the husband of Anne also dismissed the proposition of an earldom before his marriage with the Queen’s second-oldest child.
If Phillips had accepted the Queen’s proposal, Zara and Peter would have been recognized instead by courtesy titles.
In a similar vein to James, Viscount Severn and Lady Louis who opted for courtesy names rather than Prince and Princess.
Archie, the son of the Prince Harry and Meghan Markle was also also unable to receive a royal title because of old-century ruling.
Instead, Prince Harry’s child is known as Archie Harrison Mountbatten-Windsor.
The reason why Archie is denied the royal title of Prince originates from legislation passed by his great grandfather, King George V.
King George ordered a Letters patent calling for limitations on the use of royal titles in 1917.
The legislation states: “The grandchildren of the sons of any such Sovereign in the direct male line (save only the eldest living son of the eldest son of the Prince of Wales) shall have and enjoy in all occasions the style and title enjoyed by the children of Dukes of these Our Realms.
The ruling permits the use of royal titles to be only passed down the male line of Sovereign.
In that line, the four children Prince Charles, Prince Andrew, Prince Edward and Princess Anne were all granted royal titles.
But due to this legislation, only the monarch’s sons could afford their grandchildren the same privilege.
When Prince Charles becomes king, Archie may have the opportunity to be called a prince as the granchild of the monarch.