Cáo Tíngdòng 曹庭棟 (1699–1785, zì Liùpǔ 六圃, hào Kǎirén 楷人), of Jiāxīng 嘉興 (Xiùshuǐxiàn, Zhèjiāng). High-Qiánlóng-era scholar and editor; lived to a remarkable 86 suì (Chinese counting), making him one of the most-celebrated geriatric scholars of the period. Major works include the Sòng bǎijiā shī cún 宋百家詩存 KR4h0167 (1741, the supplementary anthology to Wú Zhīzhèn’s Sòng shī chāo); the Yì zhǔn 易準 (a kǎozhèng study of the Yìjīng); the Lǎolǎo héngyán 老老恆言 (his celebrated 5-juǎn manual of life-cultivation in old age, drawing on his own longevity and on broad reading of medical and Daoist yǎngshēng sources — one of the best-known pre-modern Chinese geriatric-practice texts). Also produced studies of music, gardening, and the local Jiāxīng / Xiùshuǐ tradition. CBDB id 88595, lifedates 1699–1785. Standard biographies in Qīngshǐ lièzhuàn.
The traceable family background: descended from a Míng Tàicháng sì qīng zōngbǎi (the Sōngbǎo péngxuě xiānshēng mentioned in Cáo’s own preface to KR4h0167) — i.e. his great-great-grandfather, who in late Míng worked on a Sòng-poetry anthology that was lost.