Mr MacMarthanne added: “Consequently, should the children of the Duke and Duchess of Cambridge wish to marry, they will be required to seek the sovereign’s permission.
“Rather than moving further away from this requirement the Cambridge children will move closer when their grandfather, the Prince of Wales, inherits the throne.”
The only way Archie may be freed from this obligation is if either George, Charlotte or Louis marry and have children before him which would bump him down the line of succession.
Mr MacMarthanne explained: “Indeed, with this movement, as things presently stand, it might be anticipated that the Duke and Duchess of Sussex’s son, should he marry, will have to seek the sovereign’s permission unless one of his three cousins marry and have children first, as he will be sixth in line when his grandfather is king.”
