Answer

Agar aap Bhagwan Mahavir ke janm-katha wale Rishabhdatta ki baat kar rahe hain, to is sandarbh mein Siddharth ka naam aata hai. Jain granthon ke anusar Rishabhdatta Brahman-kundpur ke pramukh the aur Siddharth Kshatriya-kundpur ke pramukh the. ( jainworld.jainworld.com)

Explanation

Kai paathya-sandarbho mein Rishabhdatta aur Siddharth ko Mahavir-charitra ke aas-paas ke mukhya vyaktiyon ke roop mein dikhaya gaya hai. ( jainworld.jainworld.com)

Takeaway

Is prashn ka sabse sambhavit uttar: Siddharth. ( jainworld.jainworld.com)