Hi Terence,
Thank you for being part of the solution!
We received the tree from Gee sifu, through John (one of the original students before the VTMs involvement and the HFY name began being used publically) and it was expressly for Complete Wing Chun.
As you know, records of the Red Junk are sketchy at times. For example, Kam is known by the nicknames “Painted Face” and “New”, and not by a full proper name. Likewise, Biu is known in this family tree as “Red Turban”, perhaps a nod to the Red Turbans who fought to overthrow the Yuan, perhaps to the Red Turbans who tragically died fighting the Qing in Guangdong, or perhaps to the Red Turban common-folk who came out to support the Red Junk performers in Foshan (perhaps this was even how he encountered them?)
Now, while no other lineage lists a Hung Gam Biu, there is another Biu listed as one of the hairpins (along with Wong, Leung, Kam, etc.) in the Cho family records. While Biu is not a unique name, if Dai Fa Min Kam and Sam Kam are the same, perhaps Hung Gam Biu and the Biu from the Cho records is the same?
In either case, again, the records of that time are sketchy, and we cannot speak of them with absolute certainty (but then, people on CNN argue every day about what really happened just last week, just down the street, 150 years ago, on the other side of the world, is even more challenging).
Unfortunately, I have no information as to who this sihing was. The tree, however, was not identical to Pan Nam’s, as it listed far more members from the Red Junk period (Pan’s listed only Wong, Leung, Kam, and Lay Fook-Shun, whom I believe Gee sifu listed as Siu Sang Hung Fook, since Lay was the Siu Sang in the Opera). Gee sifu’s tree was much more complete as well, listing out the lineages for Yip Man, Yuen Kay-San, and others (though Fok Bo-Chuen was listed as a student of Law Man-Gung rather than Wong Wah-Bo, which is laterally different from Sum Nung’s listing). I can’t speculate as to why Pan Nam’s was/is missing generations.