Origins
Descendants of King Hui of Zhou
One branch of the Liang surname derives from the Ji lineage and descends from Liang, associated with King Hui of Zhou; a collateral descendant took the ancestral grandfather's name as the surname.
Reference: 「凉」氏百科-姓氏百科-百家姓氏-了解自己的姓氏从何而来
Adoption of a State Name
Another account states that there was an ancient Liangzhou, whose former city was northeast of present-day Qin'an in Gansu, and that some people adopted the state name as their surname.
