Who was the father of lord siva?

In Hindu mythology, Lord Shiva is often considered to be self-existent and not born from any father or mother, as he embodies the ultimate reality and consciousness. However, in some texts, he is described as the son of Sage Atri and his wife Anusuya. Additionally, in certain narratives, he is sometimes associated with the primordial being, Vishnu, but this is more symbolic than literal. Ultimately, Shiva's origin varies across different traditions and interpretations.