According to the Markandeya Purana Chakshush, the Manu for the previous Manvantar was born to Anmitra and Giribhadra.
Chakshush had manifested from the eye (Chakshu) of Lord Brahma in his previous birth. For this reason, he was known as Chakshush. Chakshush was born to Anmitra and Giribhadra. After taking birth, he was abducted by Jatharini and exchanged with the son of King Vikrant who was sleeping besides his mother.
However, the Harivamsa states that he was born in the lineage of Dhruva:
Dhruva’s wife, Shambhu, gave birth to sons named Shlishti and Manya. Shlishti’s wife, Succhaya, gave birth to five unblemished sons — Ripu, Ripunjaya, Vipra, Vrikala and Vrikatejasa. Ripu’s wife, Brihati, gave birth to Chakshusha and he possessed every kind of energy. Through Pushkarini, Virana’s daughter, Chakshusha had a son named Chakshusha Manu. This great-souled Prajapati was thus descended from Virana’s lineage.
Which of these stories regarding the origin of the 6th Manu is actually correct?
Please refrain from the Kalpa Bheda logic I am looking for at least one of the references getting some mention in a different scripture than the ones quoted.