1
general::
Important, of distinction, famous, as in I have nothing of note to report, or The speaker was a man of note. This idiom uses note in the sense of "importance" or "fame." [Late 1500s]
American Heritage Idioms
2
general::
Phrase(s): someone of note
a person who is famous. • We invited a speaker of note to lecture at the next meeting. • The baseball player of note was inducted into the Hall of Fame.
McGrawhill's American Idioms And Phrasal Verbs