Zhèng Bǎo 鄭珤 (fl. 1260–1263) — a late-Southern-Sòng prefectural school officer who served as jiàoshòu 教授 of Yánzhōu 嚴州 (modern western Zhèjiāng, the Xīn’ānjiāng valley) during the early Jǐngdìng era. With his colleague Fāng Rénróng 方仁榮 (the prefectural xuélù 學錄) he co-compiled the Jǐngdìng Yánzhōu xùzhì 景定嚴州續志 KR2k0020 in 10 juan, completed in Jǐngdìng rénxū (1262) under the patronage of the prefect Qián Kězé 錢可則 (tàifǔ chéng 太府丞), with a preface by the local zhuàngyuán of 1247 Fāng Féngchén 方逢辰. The catalog meta gives his floruit as 1260–1263. The Sìkù tíyào explicitly states “shǐmò jūn wèixiáng 始末均未詳” — his beginnings and ends are not known. CBDB id 51243 confirms a unique person identification but supplies no further data; the homonymous CBDB id 141729 (a Táng person, 791–856) is unrelated.