"More Famous" is an arbitrary concept. There is no way to properly gauge which one is known by a majority of the general public without doing extensive polling.
Since that data does not exist any answer provided by the participants of this site would only be opinion based and not a substantial answer.
It is kinda an opinion. If you like Disney, you probably would like Donald. If you like awesome music, you probably would like Adele.
Donald the duck
Donald Duck.
Donald Duck is more famous because hes bin around longer
Donald Duck he was around in 1934
daffy duck
donald duck
Donald Duck
Donald Duck!!
dendelf
donald duck is more famous than mario
Donald Duck because he is awesome.
Donald Duck. By Far.