Wen Dalin (574 – 1 July 637[1]), courtesy nameYanbo,[2] better known as Wen Yanbo, posthumously known as Duke Gong of Yu, was a Chinese official who lived in the early Tang dynasty. He was a key advisor to the Tang dynasty's founding emperor, Emperor Gaozu, and served as a chancellor during the reign of Gaozu's successor, Emperor Taizong. He was captured by the Göktürks and lived among them for years. After he was freed, he drew on his experiences to provide advice to Emperor Taizong on the Tang Empire's policies towards the Göktürks.
^Wen's tablet (唐故特进尚书右仆射上柱国虞恭公温公碑; text drafted by Cen Wenben and crafted by Ouyang Xun) indicate that he died at the age of 64 (by East Asian reckoning) on the 4th day of the 6th month of the 11th year of the Zhen'guan era. ([贞观十一年]六月四日薨于旌善里第，春秋六十有四。) Emperor Taizong's biographies in both Books of Tang dated Wen's death to the jia'yin day of the same month, which corresponds to 28 Jun 637 in the Julian calendar. ([贞观十一年]六月甲寅，尚书右仆射、虞国公温彦博薨。) Jiu Tang Shu, vol.03. Vol.195 of Zizhi Tongjian indicate that he died in the 6th month of the same year, which corresponds to 28 Jun to 26 Jul 637 in the Julian calendar.
^The New Book of Tang actually indicated that "Yanbo" was the formal name while "Dalin" was the courtesy name. See New Book of Tang, vol. 91 [1]. However, that is inconsistent with his brothers, whose names were Daya (大雅) and Dayou (大有) and courtesy names were Yanhong (彥弘) and Yanjiang (彥將) respectively. Wen's tablet indicate that "Yanbo" was the formal name while "Dalin" was the courtesy name. (公太原祁人，讳彦博，字大临，...)