Origins
Origin Tradition Associated with the State of Xu
According to this secondary source, the surname’s history is traced to the ancient state of Xu; it says that during the Zhou dynasty this state was called the fief of the Marquis of Xing and was later incorporated into Jin. This account has not been directly verified against a cited primary text.
Reference: 罕见姓氏:畜姓的起源与历史趣闻_文化_传承_楚雍
Historical Records
Account of the Descendants of Chu Yongzi
The article reports that the Zuo Zhuan records Chu Yongzi fleeing warfare to Jin, receiving the territory of Xu, and having descendants who adopted Xu as their surname, making him one of the surname’s progenitors. Because the supplied material is only a secondary compilation, this cannot be treated as verification of the original Zuo Zhuan text.
Reference: 罕见姓氏:畜姓的起源与历史趣闻_文化_传承_楚雍
Migration and Distribution
Recorded Association with Tianshui Commandery
According to the article’s citation of the Qianjiaxing, families bearing the surname Xu were mainly distributed in Tianshui Commandery in antiquity. The supplied source gives neither the original passage or edition of Qianjiaxing nor further migration information.
Reference: 罕见姓氏:畜姓的起源与历史趣闻_文化_传承_楚雍
Research Notes
Source Status and Evidentiary Limits
The source page states that the article contains AI-generated content and that its views represent only the author. Its statements about the Zuo Zhuan, Qianjiaxing, and the surname’s origins therefore record only the article’s account and must not be presented as results verified from the primary texts.
Reference: 罕见姓氏:畜姓的起源与历史趣闻_文化_传承_楚雍