Del. Const. art. I, § 19
Hereditary distinctions; holding office during good behavior; offices and titles from foreign states
84 Del. Laws, c. 281 and 85 Del. Laws, c. 5;State of Delaware
No hereditary distinction shall be granted, nor any office created or exercised, the appointment to which shall be for a longer term than during good behavior; and no person holding any office under this State shall accept of any office or title of any kind whatever from any king, prince, or foreign State.