Why one surname can have several origin stories
A familiar surname may have multiple accounts in different sources and family traditions.
A story is not a single origin certificate
Historical surnames spread through movement, adoption, changing political contexts, and many unrelated family lines. Accounts in later genealogies can be valuable traditions while remaining difficult to verify as the origin of every present-day bearer. A page that supplies one neat origin for millions of people should be read cautiously.
How this site labels evidence
We distinguish a documented bearer, a dynastic association, a traditional origin story, and a proven individual genealogy. The first three may illuminate culture; none establishes the fourth. A surname profile links to the source of a specific claim and notes where the record does not answer a user’s family-history question.
The fact that 李 was used by the Tang ruling house does not tell us how a modern Li family acquired the name.
What to do with this
Use history to understand a name’s context, never as an automated ancestry test.
Sources & limits
Sources support the specific facts cited above. An editorial name interpretation is not an ancient quotation or proof of family ancestry.