Shěn Yìfǔ 沈義父 (fl. Chúnyòu era, 1240s), zì Bóshí 伯時. A cí-theorist of the late Southern Sòng. The Sìkù tíyào dates his life through his own colophon to the Yuèfǔ zhǐmí KR4j0080, in which he records that “in rényín autumn I first met Jìngwēng (i.e. Jiāng Kuí’s posthumous nephew) at the Zébīn 澤濱; in guǐmǎo I met Mèngchuāng (Wú Wényīng 吳文英) and we composed in exchange in our idle hours” — rényín and guǐmǎo being Chúnyòu 2 and 3 (1242–1243). He was thus a Lǐzōng-reign figure, a junior-by-half-a-generation associate of Wú Wényīng, working in Wú’s circle of Sòng-Yuán-transition cí-poets. Not in CBDB. His one surviving work is the Yuèfǔ zhǐmí 樂府指迷, the influential cí-theory treatise that Wàn Shù 萬樹 later took as the textual basis for his Cílǜ KR4j0087.