According to the first paragraph of this article, Jônatas is the Brazilian Portuguese spelling, whilst Jónatas is the spelling that they use in Portugal:https://pt.wikipedia.org/wiki/J%C3%B3natas (in Portuguese) [noted -ed]By the way, the Portuguese form of Jonathan ends in -as because it ultimately comes from Ιωνάθας (Ionathas), which is how the name appears in the Septuagint.
https://pt.wikipedia.org/wiki/J%C3%B3natas (in Portuguese) [noted -ed]
By the way, the Portuguese form of Jonathan ends in -as because it ultimately comes from Ιωνάθας (Ionathas), which is how the name appears in the Septuagint.