Jiang Ziya
Duke Tai's personal name was Tian He (田和), and ancestral name Gui (媯). His official posthumous title was simply Duke Tai of Qi, but he is commonly called Duke Tai of Tian Qi or Duke Tai of Tian to be distinguished from Jiang Ziya, the original Duke Tai from the House of Jiang, who founded Qi in the 11th century BC.