I know what mistela is and it is not a type of wine but an ingredient for a type of wine :
"Mistelle (Italian: mistella; French: mistelle; Spanish, Portuguese, Galician and Catalan: mistela, from Latin mixtella/mixtvm "mix") is sometimes used as an ingredient
in fortified wines, .."
Too much trouble explaining the exact meaning in English but the word has in Portuguese (and possibly in Spanish) a negative connotation, a derived one. Mistela is used in common Portuguese language to describe something that is adulterated and it is not good.
If Miss taylor comes from mistela I don't think it would be a nice name for a boat.