Yang Gongren (楊恭仁) (died 639), formal name Yang Guan (楊綸) but went by the courtesy name of Gongren, formally Duke Xiao of Guan (觀孝公), was an official and general during the Chinese dynasties Sui Dynasty and Tang Dynasty, at one point serving as a chancellor during Tang.
Read more about Yang Gongren: Background, During Sui Dynasty, During Emperor Gaozu's Reign, During Emperor Taizong's Reign