Origins
Derivation from Baili
According to this surname compilation's secondary quotation of the Dictionary of Chinese Surnames Ancient and Modern, itself citing Wanxing Tongpu, one Bai lineage was said to descend from the Qin official Baili Xi, with Baili shortened to Bai. The account classifies it as Ji-derived and based on a fief name, but the original text has not been directly verified here.
Goryeo Bai surname
The page quotes Xingshi Kaolüe as stating that Bai was one of the eight surnames of Goryeo. This is a Goryeo surname tradition and should be kept separate from other Bai origins in China; the supplied text does not establish shared descent.
