Duchess Meghan comes to mind
The Titles of Nobility Amendment is a proposed amendment to the United States Constitution. The 11th Congress passed it on May 1, 1810, and submitted to the state legislatures for ratification. It would strip United States citizenship from any citizen who accepted a title of nobility from an "emperor, king, prince or foreign power." On two occasions between 1812 and 1816, it was within two states of the number needed to become part of the Constitution. Congress did not set a time limit for its ratification, so the amendment is still pending before the states. Ratification by an additional 26 states is now needed for its adoption.
TEXT
If any citizen of the United States shall accept, claim, receive or retain, any title of nobility or honour, or shall, without the consent of Congress, accept and retain any present, pension, office or emolument of any kind whatever, from any emperor, king, prince or foreign power, such person shall cease to be a citizen of the United States, and shall be incapable of holding any office of trust or profit under them, or either of them.[1]
https://en.wikipedia.org/wiki/Titles_of_Nobility_Amendment
https://en.wikipedia.org/wiki/Meghan%2C_Duchess_of_Sussex