Nobility is not granted by the United States itself under the Title of Nobility Clause of the Constitution.

Can an American citizen have a title of nobility?

No Title of Nobility shall be granted by the United States: And no Person holding any Office of Profit or Trust under them, shall, without the Consent of the Congress, accept of any present, Emolument, Office, or Title, of any kind whatever, from any King, Prince, or foreign State.

Can a US citizen be a lord?

Although the Constitution prohibits the U.S. government from granting titles of nobility, it doesn't prohibit citizens from accepting titles from foreign governments.