Origins
Surname Origin
The page only states that the origin of the 楷 surname is found in Xingyuan and Guangyun. It provides no specific progenitor, formation account, or historical lineage, so those matters remain unverified.
楷 Surname
Population reference (not a current census): 4Historical Records
Documentary Attestations
According to this page's citation, Xinbian Qianjiaxing includes “楷,” and the Surname Dictionary also cites Xingyuan as including it. This confirms only what the secondary page reports; the original texts have not been independently verified here.
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