Well, I don't know if you actually have heard of someone by that name, or if your question is a joke, or if you are just confused about this term.
This is not a Taekwondo grandmaster's name that I have ever seen, but you might be confusing the term for the first school ("Kwan") of Korean Martial Art founded in 1944, by a Korean named Won-Kuk Lee, aka: Won-Kuk Yi (written in Korean with last name first: Yi Won-Kuk).
He called his school Chung Do Kwan, which means "School of the Blue Wave."
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