Dong Haichuan (13 October 1797 or 1813 – 25 October 1882) is regarded as a skillful martial artist and is widely credited to be the founder of Baguazhang.
Most, if not all, existing schools of Baguazhang place Dong Haichuan at the beginning of their lineage.
Some traditional teachers in China do not regard Dong as the founder, though, but merely as the first identified transmitter of Baguazhang knowledge to the wider public.
In their opinion, prior to Dong, Baguazhang teaching was conducted behind closed doors from one Taoist to another within the Taoist sect.
There are no historical evidence of practicing Baguazhang among the Taoists prior to the modern era, however.