Xú Zìmíng, zì Chéngfǔ 誠甫, hào Zàotáng 慥堂, was a native of Yǒngjiā 永嘉 (modern Wēnzhōu 溫州) in the late Southern Sòng. He served as Tài cháng bóshì 太常博士 (Erudite of the Court of Imperial Sacrifices) and ended his career as Prefect of Língling 零陵郡守 (in present Húnán). He is remembered chiefly as the author of the Sòng zǎifǔ biānnián lù 宋宰輔編年錄 (KR2l0007) — a chronologically arranged prosopography of all Grand Councillors and Vice Grand Councillors of the Northern and early Southern Sòng, terminating with Jiādìng 8 (1215). The work was first printed by his son Xú Jūyì 徐居誼 at the county school of Yǒngfú 永福 in Bǎoyòu 5 (1257). The colophon by Chén Fǎng 陳昉 — who had assisted with the chronicle as a youth of 18 or 19 — places Xú in the Jiādìng generation of court scholars; CBDB lists him with no firm lifedates. Xú is described by Chén Fǎng as a strict and dignified senior scholar of Yǒngjiā with a reputation for filling rooms with manuscripts in his careful “fly-head” minute calligraphy.