Answer

In Jain tradition, Sundari’s brother was Bahubali.

She was the daughter of Bhagwan Rishabhdev (Adinath), the first Tirthankar. Her brothers included:

• Bharat Chakravarti
• Bahubali

Explanation

Sundari is traditionally remembered along with Brahmi, her sister. Bhagwan Rishabhdev taught:

• Brahmi — writing/script
• Sundari — mathematics/numeracy

Among her brothers, Bahubali is especially well known for his renunciation, deep meditation, and victory over ego.

Takeaway

Sundari belonged to the family of Bhagwan Rishabhdev, and her famous brothers were Bharat and Bahubali.