Igbo Ukwu and possible link to Eri. Igbo Ukwu archaeological site may hold a connection to the Eri lineage through Umunri oral tradition. According to legend, Nri, Eri's first son, was instructed by Chineke (the Supreme Being) to sacrifice his first son and daughter. From their graves, cocoyam and yam sprouted, symbolizing agricultural fertility. An 11th-century CE…