Word-Out Grammar

...I just don't like the word "famously."   If it's used as a synonym for excellently, that 's OK, as in "We ate the famously prepared salmon at Pierre's restaurant."   But the word's use as something widely known at present as the result of a previous action seems wrong to me.   When used as  in "Patrick Henry famously said give me liberty or give me death,"  or "Marilyn Monroe famously sang Happy Birthday to JFK,"  we know the adverb famously is meant to modify the verbs said and sang.  But the definition could not have applied then, as the action had just recently been performed.  The quote and the song are famous now, but certainly not then.  If I should say something today, and it becomes widely known in years to come,  have I said it famously?   Maybe there's still hope........