Liú Bá 劉跋 Late-Northern-Sòng official or layman of Héjiān 河間; author of one of the two Shàoshèng 2 (1095, twelfth lunar month) prefaces to the Fǎyǎn chánshī yǔlù (KR6q0058), prepared during the lifetime of Wǔzǔ 法演 Fǎyǎn.