Yudhisthira was the first of the Pandavas. His mother
was Kunti. Who is the father of Yudhisthira in the Mahabharat is
explained below in the story.
Kunti was married to Pandu. But Pandu could not have sexual union with Kunti because of a curse. Kunti due to her service to Sage Durvasa had got a boon that she will be able to summon a god and have children in him. Pandu requested Kunti to make use of the boon. Thus Yudhisthira was born when Kunti summoned Dharmaraja, or Yama.
Kunti was married to Pandu. But Pandu could not have sexual union with Kunti because of a curse. Kunti due to her service to Sage Durvasa had got a boon that she will be able to summon a god and have children in him. Pandu requested Kunti to make use of the boon. Thus Yudhisthira was born when Kunti summoned Dharmaraja, or Yama.
But as per social custom that was followed at the time of
Mahabharata, Pandu is the father of Yudhisthira.