Markandeyapurana 74.56

74.56

ye devā yatpatiryaśca devendro ye tatharṣayaḥ /
ye putrāśca manostasya pṛthivīparipālakāḥ //

He having conquered the whole earth as king by the name Tāmasa, became a Manu by name Tāmasa. Hear about his manvantara: who were the gods, who was the ruler,[12] and who was the lord of the gods, and who were the ṛṣis, and who were that Manu’s sons, the guardians of the world.