Chéng Gōngxǔ 程公許 (c. 1182–c. 1251), zì Jìyǔ 季與, alternative zì Xīyǐng 希穎, hào Cāngzhōu 滄洲, native of Xuānhuà 宣化 in Xùzhōu 敘州 (modern Yíbīn 宜賓 area, Sìchuān). Jìnshì of Jiādìng 4 (1211). His career culminated as acting xíngbù shàngshū 權刑部尚書 and Bǎozhāng gé xuéshì 寳章閣學士, with a tenure as prefect of Lóngxīng 隆興府 (Nánchāng). The Sòng shǐ (415) records him as an outspoken remonstrator who refused to bow to the favourites of the court — repeatedly memorialising on Sìchuān frontier affairs, defending Dù Fàn 杜範, and protesting the death of Xú Yuánjié 徐元杰. He was repeatedly forced from office by the cliques. His preserved oeuvre is Cāngzhōu chénfǒu biān 滄洲塵缶編 KR4d0322, self-edited in 1241 from his official collections (one work-station = one juan), with the bulk of the prose lost; the title alludes to Lù Jī’s 陸機 “chén meng yú kòu fǒu” “fearing to soil the bell-clapper by drumming on a clay jar”. Posthumous title Wénjiǎn 文簡. CBDB id 13807. (CBDB shows the index year as 1181; standard biographical sources give birth c. 1182. The lifedates here follow the modern consensus from his own zìxù.)