He became a naturalized British subject in 1867.
Finally a clause said that "no person born out of the kingdoms of England, Scotland or Ireland, or the dominions thereunto belonging (although he be naturalized or made a denizen) except such as are born of English parents, shall be capable to be of the Privy Council, or a member of either House of Parliament, or enjoy any office or place of trust, either civil or military, or to have any grant of lands, tenements or hereditaments from the Crown to himself, or to any other or others in trust for him."
The sieu, on the other hand, were early naturalized in Japan.
An imperial decree naturalized Jecker in France, and Napoleon III.
French residents numbered 50,996, naturalized Frenchmen Spaniards 12,354, Italians 7368, Maltese 865, and other Europeans (chiefly British and Germans) 1652, besides 12,490 Jews.