Origins
Ba Clan-Tribe Account
The source gives one origin account: a Ba (捌) tribal group within the Tangut branch of the ancient Qiang adopted its tribal name as a surname, later simplified by some descendants from 捌 to 八. This is the webpage compilation's account, and no underlying primary text is identified for it.
Reference: 八姓_八姓的来源和历史_百家姓
Historical Records
Ming Sichuan Hereditary Officer
Citing the History of Ming through the Xing shi kao lüe, the source states that a native chiliarch of the Right Battalion at Dachong River in Sichuan bore the surname 八 and classifies it as an ethnic-minority surname. This is the webpage's relay of a secondary citation.
Reference: 八姓_八姓的来源和历史_百家姓
Commanderies and Clan Halls
Commandery and Hall Name
The source lists Henan Commandery as the surname's commandery association and Henan Hall as its hall name, stating that the hall was named after the commandery. It provides no specific historical evidence establishing the surname's connection with Henan Commandery.
Reference: 八姓_八姓的来源和历史_百家姓
Migration and Distribution
Reported Distribution
The source reports the surname in Taiyuan, Yuncheng, and Linfen in Shanxi, Xinhui in Guangdong, and Tonghai in Yunnan; another passage also lists Ninglang in Yunnan and a place written “绎县” in Shanxi. It gives neither a survey year nor population figures.
Reference: 八姓_八姓的来源和历史_百家姓