Translation is not the point, it's transliteration that's the problem here (actually it says YWNTN NTNYHW). Either way is possible and correct. In Wikipedia Yonatan is a redirect to Jonathan. But since the Hebrew name has been translated as Jonathan for the past umpteen centuries there is no point discussing what's correct and what's not. As Jonathan Netanyahu is already a redirect, and nobody will bother to change all the links in the articles, I would suggest to leave everything as it is.