You stated that your lineage was through the Han Moo Kwan. The founder of the Han Moo Kwan credits his teacher as GM CHUN Sang Sup, not Dr. YOON Kwe Byung. So Dr. Yoon is not in your lineage.
My research indicates that he was a part of our lineage. Lee officially does not credit affliation with the Jidokwan, but as stated, my research indicates otherwise.
Unfortunately, Korean history is rife with re-writes. So it is very difficult to be precise on every point of one's research. Years ago I sent my lineage research off to several different KMA's individuals (as well as JMA/CMA) to look over and offer input and corrections. The result is what we know have. Again, very difficult to be absolutely precise due to certain...shall we say 'historical revamps' but at some point one has to go with what they have. It is what it is.
I appreciate your interest.