Jiāng Kuí 姜夔 (ca. 1155–1221), zì Yáozhāng 堯章, hào Báishí dàorén 白石道人, was a Southern Sòng poet, cí-lyricist, calligrapher, musicologist, and connoisseur from Póyáng 鄱陽 (Jiāngxī). He never held office despite repeated attempts at the jìnshì, supporting himself through patronage by senior officials including Fàn Chéngdà 范成大, Yáng Wànlǐ 楊萬里, and others. His cí (collected as Báishí dàorén gēqǔ 白石道人歌曲) — many with surviving musical notation in gōngchěpǔ form — and his shī are major works of the Southern Sòng. In epigraphy and fǎtiè criticism his contributions are likewise central: the Jiàngtiè píng 絳帖平 KR2n0019 critically evaluates the imperial Jiàngtiè anthology; the Xùtiè piānbàng kǎo 禊帖偏傍考 (a study of the Lántíng characters’ radicals) is highly regarded by Cáo Shìmiǎn (Fǎtiè pǔxì) and Zēng Hóngfù. His treatise on calligraphy Xùshū pǔ 續書譜 is one of the foundational Sòng works on the subject. CBDB 29608 records 1155–1221; modern scholarship sometimes places his death as late as 1235 (the catalog meta gives “ca. 1155 – ca. 1235”).