Aron (Bulgarian: Арон; died in 987/988[1][2][3] or 976)[citation needed] was a Bulgarian noble, brother of Emperor Samuel of Bulgaria and third son of komes Nicholas. After the fall of the eastern parts of the country under Byzantine occupation in 971, he and his three brothers David, Moses and Samuel continued the resistance to the west. They were called Cometopuli and ruled the country together, as the rightful heirs to the throne, Boris II and Roman were imprisoned in Constantinople. The residence of Aron was Serdica (modern-day Sofia), situated on the main road between Constantinople and Western Europe. He had to defend the area from enemy invasions and attack the Byzantine territories in Thrace.