I had to look it up but I think this sounds very credible.

A viceroy is a royal official who governs a country or province in the name of and as representative of the monarch. The term derives from the Latin prefix vice-, meaning "in the place of" and the French word roi, meaning king. His province or larger territory is called a viceroyalty. The relative adjective is viceregal. A vicereine is a woman in a viceregal position (rare, as it usually includes military high command), or a Viceroy's wife.

http://en.wikipedia.org/wiki/Viceroy

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Note added at 21 mins (2008-10-23 18:38:00 GMT)
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http://www.websters-online-dictionary.org/vi/vicereine.html

"Q: What is a Viceroy/Vicereine?

A: According to the Oxford English Dictionary, a Viceroy or Vicereine is "One who acts as the governor of a country, province, etc. in the name and by the authority of the supreme ruler; a vice-king." Originally, as the "Seat" of the East Kingdom, Ostgardr was ruled directly by the Crown; for the past few decades it has been ruled by a Viceroy and Vicereine as representatives of the Crown. According to Kingdom law, the Viceroy and Vicereine of Ostgardr outrank all other landed barons, regardless of their dates of elevation, and indeed take precedence over all but royal peers. Within the Crown Province (at least according to one knowledgable source), they take precedence over royal peers as well, except the current King, Queen, Crown Prince, and Crown Princess."

http://www.ostgardr.org/whatwedo/trivia/Vice.Def.php

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Note added at 14 hrs (2008-10-24 09:12:18 GMT) Post-grading
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Thanks for the points, French Foodie