Léi Yìxiān 雷逸仙 (early-to-mid 19th c., 清), father of 雷豐 Léi Fēng and a Qúzhōu 衢州 physician. Disciple of 程芝田 Chéng Zhītián. Known principally through Léi Fēng’s Shíbìng lùn (KR3eg002) preface as a second-generation member of the Sānqú 三衢 (Qúzhōu) medical family.