Gao Gan
In the late 190s, Yuan Shao wanted to divide his territories among his three sons by putting each son in charge of one province and assess their capabilities. However, Ju Shou strongly objected to this idea and argued that it would sow the seeds for internal conflict later. Yuan Shao ignored him and went ahead by putting his eldest son Yuan Tan in charge of Qing Province, his second son Yuan Xi in charge of You Province, his maternal nephew Gao Gan in charge of Bing Province, while his third son Yuan Shang would succeed him as the Governor of Ji Province. Ju Shou's prediction came true as conflict broke out between Yuan Tan and Yuan Shang almost immediately after Yuan Shao's death in 202.