Being former agnatic members of the royal house of Denmark, original holders of the title Count of Rosenborg were assigned the highest place in the Danish order of precedence (1st Class, No.

The history of the Count of Rosenborg title is closely tied to the Danish royal family's regulations on dynastic marriages and succession rights.

In the event that a member of the Danish royal family enters into a marriage without the explicit permission of the sovereign, that person renounces his or her own right of succession and that of his or her descendants.

[2] Furthermore, this authority is specifically enshrined in the King's Law (Lex Regia), the 1665 absolutist constitution of Denmark-Norway, which was repealed with the promulgation of the Danish Constitution in 1848, except for two articles, which are still applicable, Article 21 of which reads "‘No Prince of the Blood (...) shall marry (...) unless he receives Permission from the King".

He thereby renounced his dynastic right to the Danish throne, the title Prince of Denmark and the qualification Royal Highness.

The comital title in the Danish nobility was made hereditary for all of his legitimate descendants in the male line with the rank and precedence (above other counts) of a lensgreve.

[6] Subsequently, it became custom in the 20th century to grant this title to male princes, who made unequal marriages.

1 of the Danish order of precedence, and they were are thus entitled to the style "His Excellency", whereas their male descendants and comtesses of Rosenborg are placed in the 2nd class, No.