First and foremost, Messias is the hellenized form of Hebrew מָשִׁיחַ (mashiyach) meaning "anointed" (see Messiah in the main database). It was written as Μεσσίας in Ancient Greek:https://en.wiktionary.org/wiki/%CE%9C%CE%B5%CF%83%CF%83%CE%AF%CE%B1%CF%82#Ancient_Greek (in English) The Romans transcribed it into Latin as Messias and subsequently adopted it:https://en.wiktionary.org/wiki/Messias#Latin (in English)It is through Latin and Roman Catholicism that Messias eventually found its way into Portuguese and most other languages in Europe.However, unlike Brazil, most European countries do not use Messias as a given name. In the ones where it does in fact occur as a given name, it is extremely rare. Take the Netherlands, for example. In 2014, there were less than 5 males in the whole country that had Messias as a first name. Only a grand total of 5 males had it as a middle name:https://www.meertens.knaw.nl/nvb/naam/is/Messias (in Dutch)This is because Messias is too strongly connected to Jesus and Christianity, but also because it is a regular vocabulary word in Dutch. The same should apply to most other European countries as well.
https://en.wiktionary.org/wiki/%CE%9C%CE%B5%CF%83%CF%83%CE%AF%CE%B1%CF%82#Ancient_Greek (in English)
The Romans transcribed it into Latin as Messias and subsequently adopted it:
https://en.wiktionary.org/wiki/Messias#Latin (in English)
It is through Latin and Roman Catholicism that Messias eventually found its way into Portuguese and most other languages in Europe.
However, unlike Brazil, most European countries do not use Messias as a given name. In the ones where it does in fact occur as a given name, it is extremely rare. Take the Netherlands, for example. In 2014, there were less than 5 males in the whole country that had Messias as a first name. Only a grand total of 5 males had it as a middle name:
https://www.meertens.knaw.nl/nvb/naam/is/Messias (in Dutch)
This is because Messias is too strongly connected to Jesus and Christianity, but also because it is a regular vocabulary word in Dutch. The same should apply to most other European countries as well.