I am quite sure that Freddie had never heard of Kendall either.
Nor I suspect has Eric Clapton - who certainly had heard the playing of Freddie King and who even Kendall may have heard of?
It was through the playing of Eric Clapton that I first heard of Freddie King. In fact I would suggest that much of Eric Clapton's early style was influenced by (or even stolen from) Freddie King.
I am glad to say that I am glad that I have heard of both Freddie King and Eric Clapton..............