Cypriot/ crusader Latin language

Was reading the Wikipedia article on Cyprus history and saw that The kingdom of Cyprus used Latin as an official language briefly before switching to french.https://en.m.wikipedia.org/wiki/History_of_Cyprus


Are there any sources you guys know to back this up?

Furthermore could Latin be maintained as official language and be used as a sort of lingua Franca in crusader states/ maybe later the Latin empire?

Eventually it would turn into a creole of french Italian Greek and other stuff.

Is this possible?
 
No it would be like French but even more obscure and only ever used in official ceremonies the nobility would use French in everything else and everyone else whatever was spoken before
 
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