Origins
Two Enfeoffment Traditions
One tradition derives the surname from descendants of Bi Gong Gao who were enfeoffed at Xinyuan, around present-day Yuanqu in Shanxi, and adopted the fief's name. Another traces it to a lineage from the state of Song that adopted Xinyuan after settling there.
Reference: 这三个复姓常被误认为日本姓氏,其实来源于中国,且历史源远流长_端木氏_周公旦_后裔
Historical Records
Xinyuan Yan in the Warring States Period
During the Warring States period, the Wei guest general Xinyuan Yan entered Handan under orders to persuade the king of Zhao to recognize King Zhaoxiang of Qin as emperor. The episode appears in both the Shiji and the Zhanguo Ce.
Reference: “新垣”这个姓是怎么来的?_澎湃号·湃客_澎湃新闻-The Paper
Xinyuan Ping in the Western Han
The Western Han diviner Xinyuan Ping gained an audience with Emperor Wen through aura divination and became involved in calendar-era changes and imperial rites. After his deceptions were exposed, he and his three kinship groups were executed.
Reference: “新垣”这个姓是怎么来的?_澎湃号·湃客_澎湃新闻-The Paper
Migration and Distribution
Ryukyuan Branch Derived from a Fujian Lin Lineage
During the Hongwu era of the Ming, a Lin lineage from Linpu in Min County, Fuzhou Prefecture, Fujian, migrated with the Thirty-Six Min Families to Chuzan in the Ryukyus. The later surnames derived from this Ryukyuan Lin lineage included Xinyuan.
Reference: “新垣”这个姓是怎么来的?_澎湃号·湃客_澎湃新闻-The Paper
Genealogy and Generation Names
Tradition of Adoption of the Liang Surname
One tradition holds that members of the Xinyuan clan gradually adopted the surname Liang. On that basis, some Liang families ancestrally associated with Kaifeng have been tentatively linked to Xinyuan, but the connection is only a possibility.
Reference: “新垣”这个姓是怎么来的?_澎湃号·湃客_澎湃新闻-The Paper
Research Notes
Early Origins Remain Uncertain
Xinyuan is a compound surname indigenous to China. Its precise origin is no longer ascertainable, though historical analysis places its emergence no later than the early Western Zhou period.
Reference: “新垣”这个姓是怎么来的?_澎湃号·湃客_澎湃新闻-The Paper