Genubath

Theft, the son of Hadad, of the Edomitish royal family. He was brought up in Pharaoh’s household. His mother was a sister of Tahpenes, the king of Egypt’s wife, mentioned in 1 Kings 11:20.

M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition
Parents: Sister of Tahpenes, Hadad