Cao Yu (simplified: 曹宇, traditional: 曹宇, pinyin: Cáo Yǔ), courtesy name Pengzu (彭祖), was Cao Cao’s son by Consort Huan (環夫人). He was enfeoffed as Marquis of a Chief District (211), Marquis of Luyang (217), Prince of Xiapi (222), and in 232 had his fief changed to Prince of Yan (燕王). When Cao Rui was dying (239), he considered appointing Cao Yu as General-in-Chief to assist the young Cao Fang; Liu Fang and Sun Zi spoke against him as unfit for the task, and Cao Rui instead gave power to Cao Shuang and Sima Yi. Cao Yu had already served briefly as General-in-Chief (238–239). He was the father of Cao Huan (Cao Huang), who became Emperor Yuan of Wei in 260 and abdicated to Sima Yan in 265. Under Jin, Cao Yu was demoted to Duke of Yan and died in 278.
Cao Yu 曹宇 Pengzu 彭祖
Cao Cao's son by Lady Huan; Prince of Yan; father of Cao Huan (Emperor Yuan of Wei); served briefly as General-in-Chief in 238–239; lived into the Jin dynasty.