so John Williams lied about this?
a false statement made with deliberate intent to deceive; an intentional untruth; a falsehood. Synonyms: prevarication, falsification. Antonyms: truth.'
Lie | Define Lie at Dictionary.com
A lie requires intent. And since you CANNOT know what John Williams intent was when he made said statements (unless he stated them each time), then you cannot know his intent.
So where is your proof of his intent or do you just commit defamations of character as a hobby?
Plus, you say he 'likes to tell' this supposed lie.
Are you personally familiar with him? Has he told you that he derives pleasure from uttering said statement? Because unless he has - and you can prove it - then it appears that you are just going around putting words in his mouth.
And if you cannot prove it and you admit that you made the statement knowing you could not prove it...then it appears that it is you that is guilty of telling a lie.