Gao Jiong
It is unknown when Yang Gongren was born. He was the oldest son of Yang Xiong (楊雄), a distant nephew of Sui Dynasty's founder Emperor Wen, who was considered one of the four most powerful officials at one point early in Sui, with Gao Jiong, Yu Qingze (虞慶則), and Su Wei and who was created an imperial prince with various titles, eventually the title of Prince of Guan.