uZwelithini kaBhekuzulu iSilo, uZwelithini kaBhekuzulu iSilo, uZwelithini kaBhekuzulu King Goodwill Zwelithini kaBhekuzulu (born 14 July 1948 at Nongoma ) is the reigning king of the Zulu nation under the Traditional Leadership clause of South Africa 's republican constitution . He is the eldest son of King Cyprian and his second wife,