émigré

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun One who has left a native country, especially for political reasons.

from The Century Dictionary.

• noun An emigrant: applied specifically to those persons, chiefly royalists, who became refugees from France during the revolution which began in 1789.

from the GNU version of the Collaborative International Dictionary of English.

• noun One of the natives of France who were opposed to the first Revolution, and who left their country in consequence.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A Frenchman who has departed their native land, especially a royalist who left during the French Revolution.
• noun An emigrant, one who departs their native land to become an immigrant in another, especially a political exile.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun someone who leaves one country to settle in another