text: Rudras refer to the forms of the god Rudra, whose traditions have since been associated with Shiva. They make up eleven of the thirty-three gods in the Vedic pantheon. They are at times identified with the storm deities referred to as Maruts, while at other times considered distinct from them.
  While the Vamana Purana describes Rudras as the sons of Kashyapa and Aditi, Maruts are described distinct from the Rudras as the 49 sons of Diti, sister of Aditi, and the attendants of Indra, rather than Rudra.
  Birth and names
  The Ramayana tells they are eleven of the 33 children of the sage Kashyapa and his wife Aditi, along with the 12 Adityas, 8 Vasus and 2 Ashvins, constituting the  Thirty-three gods. The Vamana Purana describes the Rudras as the sons of Kashyapa and Aditi. The Matsya Purana notes that Surabhi – the mother of all cows and the "cow of plenty" – was the consort of Brahma and their union produced the eleven Rudras. Here they are named
  Nirṛti
  Śambhu
  Aparājita
  Mṛgavyādha
  Kapardin
  Dahana
  Khara
  Manas
  Ahirbudhnya
  Kapālin
  Piṅgala
  Senāni
  The Harivamsa, an appendix of the Mahabharata, makes Kashyapa and Surabhi – here, portrayed as his wife – the parents of the Rudras. In another instance in the Mahabharata, it is Dharma (possibly identified with Yama) who is the father of the Rudras and the Maruts.