Famous, widely known (6)
I believe the answer is:
public
I believe this clue is a double definition.
'famous' is the first definition.
(thesaurus)
'widely known' is the second definition.
(thesaurus)
(Other definitions for public that I've seen before include "Community in the open?" , "In open view" , "Offence against common decency" , "Serving the people" , "School or house" .)