Answer

Marichi’s mother was Queen Sumangala.

Marichi was the son of Bharat Chakravarti, and Bharat Chakravarti was the son of the first Tirthankar, Bhagwan Rishabhdev.

Takeaway

So, in Jain tradition:

• Father: Bharat Chakravarti
• Mother: Queen Sumangala
• Grandfather: Bhagwan Rishabhdev